HEX atlas value

#2D9CDB

#2D9CDB is a cool blue HEX color nearest Zircon Blue. RGB 45, 156, 219, HSL 202° 71% 52%, luminance 0.2945; view contrast and conversions.

blue cool balanced

#2D9CDB Sample readable text

HEX #2D9CDB

RGB rgb(45, 156, 219)

HSL hsl(202 71% 52%)

CMYK cmyk(79, 29, 0, 14)

Luminance 0.2945

Contrast Black 6.89:1White 3.05:1

CSS

--color-2d9cdb: #2D9CDB;
.background-2d9cdb { background-color: #2D9CDB; }
.text-2d9cdb { color: #2D9CDB; }

HEX meaning and use

About #2D9CDB

#2D9CDB is classified as a cool blue value with balanced visual character. #2D9CDB is visually closest to Zircon Blue, a named blue color with HEX #2D9CDB.

The RGB channels are 45, 156, and 219, with blue carrying the strongest channel weight. In HSL, the hue is 202deg with 71% saturation and 52% lightness, so this page treats it as a high-saturation, mid-lightness atlas color rather than a generic swatch.

Practical uses for this HEX value include color conversion, WCAG contrast checks, CSS color tokens, and calm digital interfaces. Its luminance is 0.2945, black text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 0.00, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text6.89:1AA Pass

White text3.05:1AA Fail

AA text options: #000000, #1A1A1A.

AAA text options: none in seed set.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #2D9CDB needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000006.89:1 · AA

White text#FFFFFF3.05:1 · Fail

Accessible Alternatives

#2EDCC4#2EDCC4 · #000000 text · best 12.15:1 #7CC1E9#7CC1E9 · #000000 text · best 10.66:1 Verdigris#43B3AE · #000000 text · best 8.3:1 #13A3F6#13A3F6 · #000000 text · best 7.6:1 #2E45DC#2E45DC · #FFFFFF text · best 7:1

Generated Palette

Zircon Blue#2D9CDB

#DC6D2E#DC6D2E

#2EDCC4#2EDCC4

#2E45DC#2E45DC

#7CC1E9#7CC1E9

#196794#196794

Color Harmonies

#DC6D2E#DC6D2E

#2EDCC4#2EDCC4

#2E45DC#2E45DC

#DC2E9C#DC2E9C

#9CDC2E#9CDC2E

Variants

#7CC1E9#7CC1E9

#196794#196794

#13A3F6#13A3F6

#4995C1#4995C1

#A4CDE5#A4CDE5

#33B4FF#33B4FF

Nearest Named Colors

Zircon Blue#2D9CDB

Dodger Blue#1E90FF

Steel Blue#4682B4

Royal Blue#4169E1

Verdigris#43B3AE

Luminance0.2945

Black text6.89:1AA Pass

White text3.05:1AA 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":"#2D9CDB","rgb":[45,156,219],"hsl":[202,71,52],"cmyk":[79,29,0,14],"luminance":0.2945,"contrast":{"black":6.89,"white":3.05}}

WCAG

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

Safe pairings

[{"name":"Black text","hex":"#000000","contrast":6.89,"wcagAA":true,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":3.05,"wcagAA":false,"wcagAAA":false}]

Accessible alternatives

[{"name":"#2EDCC4","hex":"#2EDCC4","family":"cyan","bestTextColor":"#000000","contrastBlack":12.15,"contrastWhite":1.73,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"#7CC1E9","hex":"#7CC1E9","family":"blue","bestTextColor":"#000000","contrastBlack":10.66,"contrastWhite":1.97,"wcagAA":["#000000","#1A1A1A","#36454F"],"wcagAAA":["#000000","#1A1A1A"]},{"name":"Verdigris","hex":"#43B3AE","family":"cyan","bestTextColor":"#000000","contrastBlack":8.3,"contrastWhite":2.53,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":["#000000"]},{"name":"#13A3F6","hex":"#13A3F6","family":"blue","bestTextColor":"#000000","contrastBlack":7.6,"contrastWhite":2.76,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":["#000000"]},{"name":"#2E45DC","hex":"#2E45DC","family":"blue","bestTextColor":"#FFFFFF","contrastBlack":3,"contrastWhite":7,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF"]}]

AI context

{"semanticGroups":["cool blue","balanced","balanced blue","Zircon Blue adjacent"],"useCases":["color conversion","WCAG contrast checks","CSS color tokens","calm digital interfaces"],"contrastSafeWith":["#000000","#1A1A1A"],"relatedEndpoints":["https://www.colorsencyclopedia.com/api/hex/2d9cdb.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/zircon-blue.json","https://www.colorsencyclopedia.com/api/colors/dodger-blue.json","https://www.colorsencyclopedia.com/api/colors/steel-blue.json"]}

Harmonies

{"complementary":"#DC6D2E","analogous":["#2EDCC4","#2E45DC"],"triadic":["#DC2E9C","#9CDC2E"],"tetradic":["#C42EDC","#DC6D2E","#45DC2E"],"splitComplementary":["#DC2E45","#DCC42E"],"monochromatic":["#7CC1E9","#2D9CDB","#196794"]}

Variants

{"light":"#7CC1E9","dark":"#196794","saturated":"#13A3F6","desaturated":"#4995C1","pastel":"#A4CDE5","neon":"#33B4FF"}

Nearest named colors

[{"slug":"zircon-blue","name":"Zircon Blue","hex":"#2D9CDB","distance":0},{"slug":"dodger-blue","name":"Dodger Blue","hex":"#1E90FF","distance":40.80441152620633},{"slug":"steel-blue","name":"Steel Blue","hex":"#4682B4","distance":53.1224999411737},{"slug":"royal-blue","name":"Royal Blue","hex":"#4169E1","distance":55.10898293381942},{"slug":"verdigris","name":"Verdigris","hex":"#43B3AE","distance":55.11805511808268}]

#2D9CDB

CSS

About #2D9CDB

WCAG Accessibility

Accessibility-Safe Pairings and Alternatives

Accessible Alternatives

Generated Palette

Color Harmonies

Variants

Nearest Named Colors

Machine-Readable HEX Data (JSON)

Related HEX Guides