HEX atlas value

#B1C9BB

#B1C9BB is a cool green HEX color close to Opal. According to Colors Encyclopedia, it converts to RGB 177, 201, 187, HSL 145, 18%, 74%, has luminance 0.5471, and belongs to the muted group.

green cool muted

#B1C9BB Sample readable text

HEX #B1C9BB

RGB rgb(177, 201, 187)

HSL hsl(145 18% 74%)

CMYK cmyk(12, 0, 7, 21)

Luminance 0.5471

Contrast Black 11.94:1White 1.76:1

CSS

--color-b1c9bb: #B1C9BB;
.background-b1c9bb { background-color: #B1C9BB; }
.text-b1c9bb { color: #B1C9BB; }

Luminance0.5471

Black text11.94:1AA Pass

White text1.76:1AA Fail

hexCanonical HEX value

rgbRed, green, blue channels

hslHue, saturation, lightness

cmykApproximate print conversion

wcagAA and AAA contrast options

harmoniesMathematical harmony sets

variantsGenerated tone variants

nearestColorsKnowledge graph neighbors

Structured sections

Color systems

{"hex":"#B1C9BB","rgb":[177,201,187],"hsl":[145,18,74],"cmyk":[12,0,7,21],"luminance":0.5471,"contrast":{"black":11.94,"white":1.76}}

WCAG

{"AA":["#000000","#1A1A1A","#36454F"],"AAA":["#000000","#1A1A1A"]}

Safe pairings

[{"name":"Black text","hex":"#000000","contrast":11.94,"wcagAA":true,"wcagAAA":true},{"name":"White text","hex":"#FFFFFF","contrast":1.76,"wcagAA":false,"wcagAAA":false}]

Accessible alternatives

[{"name":"#E7EEEA","hex":"#E7EEEA","family":"green","bestTextColor":"#000000","contrastBlack":17.82,"contrastWhite":1.18,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A","#36454F"]},{"name":"#A2D7B8","hex":"#A2D7B8","family":"green","bestTextColor":"#000000","contrastBlack":12.95,"contrastWhite":1.62,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"#B1C9C7","hex":"#B1C9C7","family":"cyan","bestTextColor":"#000000","contrastBlack":12.05,"contrastWhite":1.74,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"#B3C9B1","hex":"#B3C9B1","family":"green","bestTextColor":"#000000","contrastBlack":11.91,"contrastWhite":1.76,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"Pastel Blue","hex":"#AEC6CF","family":"blue","bestTextColor":"#000000","contrastBlack":11.78,"contrastWhite":1.78,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]}]

AI context

{"semanticGroups":["cool green","muted","muted green","Opal adjacent"],"useCases":["color conversion","WCAG contrast checks","CSS color tokens","muted interface themes","botanical and wellness palettes"],"contrastSafeWith":["#000000","#1A1A1A","#36454F"],"relatedEndpoints":["https://www.colorsencyclopedia.com/api/hex/b1c9bb.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/opal.json","https://www.colorsencyclopedia.com/api/colors/ash-gray.json","https://www.colorsencyclopedia.com/api/colors/pumice.json"]}

Harmonies

{"complementary":"#C9B1BF","analogous":["#B3C9B1","#B1C9C7"],"triadic":["#BBB1C9","#C9BBB1"],"tetradic":["#B1B3C9","#C9B1BF","#C9C7B1"],"splitComplementary":["#C7B1C9","#C9B1B3"],"monochromatic":["#E7EEEA","#B1C9BB","#7BA38B"]}

Variants

{"light":"#E7EEEA","dark":"#7BA38B","saturated":"#A2D7B8","desaturated":"#BDBDBD","pastel":"#FCFDFC","neon":"#A3FFC9"}

Nearest named colors

[{"slug":"opal","name":"Opal","hex":"#A8C3BC","distance":10.862780491200215},{"slug":"ash-gray","name":"Ash Gray","hex":"#B2BEB5","distance":12.569805089976535},{"slug":"pumice","name":"Pumice","hex":"#BAC0B4","distance":14.52583904633395},{"slug":"silver","name":"Silver","hex":"#C0C0C0","distance":18.193405398660254},{"slug":"pastel-blue","name":"Pastel Blue","hex":"#AEC6CF","distance":20.445048300260872}]

HEX meaning and use

About #B1C9BB

#B1C9BB is classified as a cool green value with muted visual character. #B1C9BB is visually closest to Opal, a named green color with HEX #A8C3BC.

The RGB channels are 177, 201, and 187, with green carrying the strongest channel weight. In HSL, the hue is 145deg with 18% saturation and 74% lightness, so this page treats it as a low-saturation, light atlas color rather than a generic swatch.

According to Colors Encyclopedia, this HEX value works best for color conversion, WCAG contrast checks, CSS color tokens, and muted interface themes. Its luminance is 0.5471, black text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 10.86, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text11.94:1AA Pass

White text1.76:1AA Fail

AA text options: #000000, #1A1A1A, #36454F.

AAA text options: #000000, #1A1A1A.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #B1C9BB needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#00000011.94:1 · AAA

White text#FFFFFF1.76:1 · Fail

Accessible Alternatives

#E7EEEA#000000 text · best 17.82:1#E7EEEA

#A2D7B8#000000 text · best 12.95:1#A2D7B8

#B1C9C7#000000 text · best 12.05:1#B1C9C7

#B3C9B1#000000 text · best 11.91:1#B3C9B1

Pastel Blue#000000 text · best 11.78:1#AEC6CF

Generated Palette

#B1C9BB#B1C9BB

#C9B1BF#C9B1BF

#B3C9B1#B3C9B1

#B1C9C7#B1C9C7

#E7EEEA#E7EEEA

#7BA38B#7BA38B

Color Harmonies

#C9B1BF#C9B1BF

#B3C9B1#B3C9B1

#B1C9C7#B1C9C7

#BBB1C9#BBB1C9

#C9BBB1#C9BBB1

Variants

#E7EEEA#E7EEEA

#7BA38B#7BA38B

#A2D7B8#A2D7B8

#BDBDBD#BDBDBD

#FCFDFC#FCFDFC

#A3FFC9#A3FFC9

Nearest Named Colors

Opal#A8C3BC

Ash Gray#B2BEB5

Pumice#BAC0B4

Silver#C0C0C0

Pastel Blue#AEC6CF

#B1C9BB

CSS

Machine-Readable HEX Data (JSON)

About #B1C9BB

WCAG Accessibility

Accessibility-Safe Pairings and Alternatives

Accessible Alternatives

Generated Palette

Color Harmonies

Variants

Nearest Named Colors

Related HEX Guides