HEX atlas value

#0F52BA

#0F52BA is a cool blue HEX color nearest Sapphire. RGB 15, 82, 186, HSL 216° 85% 39%, luminance 0.0968; view contrast and conversions.

blue cool vibrant jewel-tone

#0F52BA Sample readable text

HEX #0F52BA

RGB rgb(15, 82, 186)

HSL hsl(216 85% 39%)

CMYK cmyk(92, 56, 0, 27)

Luminance 0.0968

Contrast Black 2.94:1White 7.15:1

CSS

--color-0f52ba: #0F52BA;
.background-0f52ba { background-color: #0F52BA; }
.text-0f52ba { color: #0F52BA; }

HEX meaning and use

About #0F52BA

#0F52BA is classified as a cool blue value with vibrant and jewel tone visual character. #0F52BA is visually closest to Sapphire, a named blue color with HEX #0F52BA.

The RGB channels are 15, 82, and 186, with blue carrying the strongest channel weight. In HSL, the hue is 216deg with 85% saturation and 39% 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 rich accent palettes. Its luminance is 0.0968, white 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 text2.94:1AA Fail

White text7.15:1AA Pass

AA text options: #FFFFFF, #F5F5F5.

AAA text options: #FFFFFF.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #0F52BA needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000002.94:1 · Fail

White text#FFFFFF7.15:1 · AAA

Accessible Alternatives

#082C63#082C63 · #FFFFFF text · best 13.55:1 #200FB8#200FB8 · #FFFFFF text · best 11.53:1 Persian Blue#1C39BB · #FFFFFF text · best 8.93:1 Cobalt Blue#0047AB · #FFFFFF text · best 8.43:1 #0FA7B8#0FA7B8 · #000000 text · best 7.24:1

Generated Palette

Sapphire#0F52BA

#B8740F#B8740F

#0FA7B8#0FA7B8

#200FB8#200FB8

#347FEF#347FEF

#082C63#082C63

Color Harmonies

#B8740F#B8740F

#0FA7B8#0FA7B8

#200FB8#200FB8

#B80F53#B80F53

#53B80F#53B80F

Variants

#347FEF#347FEF

#082C63#082C63

#0050C7#0050C7

#2557A2#2557A2

#6396E3#6396E3

#0060F0#0060F0

Nearest Named Colors

Sapphire#0F52BA

Denim#1560BD

Signal Blue#0057B8

Cobalt Blue#0047AB

Persian Blue#1C39BB

Luminance0.0968

Black text2.94:1AA Fail

White text7.15:1AA Pass

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":"#0F52BA","rgb":[15,82,186],"hsl":[216,85,39],"cmyk":[92,56,0,27],"luminance":0.0968,"contrast":{"black":2.94,"white":7.15}}

WCAG

{"AA":["#FFFFFF","#F5F5F5"],"AAA":["#FFFFFF"]}

Safe pairings

[{"name":"Black text","hex":"#000000","contrast":2.94,"wcagAA":false,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":7.15,"wcagAA":true,"wcagAAA":true}]

Accessible alternatives

[{"name":"#082C63","hex":"#082C63","family":"blue","bestTextColor":"#FFFFFF","contrastBlack":1.55,"contrastWhite":13.55,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#200FB8","hex":"#200FB8","family":"blue","bestTextColor":"#FFFFFF","contrastBlack":1.82,"contrastWhite":11.53,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"Persian Blue","hex":"#1C39BB","family":"blue","bestTextColor":"#FFFFFF","contrastBlack":2.35,"contrastWhite":8.93,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"Cobalt Blue","hex":"#0047AB","family":"blue","bestTextColor":"#FFFFFF","contrastBlack":2.49,"contrastWhite":8.43,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#0FA7B8","hex":"#0FA7B8","family":"cyan","bestTextColor":"#000000","contrastBlack":7.24,"contrastWhite":2.9,"wcagAA":["#000000","#1A1A1A"],"wcagAAA":["#000000"]}]

AI context

{"semanticGroups":["cool blue","vibrant","jewel tone","vibrant blue","jewel tone blue","Sapphire adjacent"],"useCases":["color conversion","WCAG contrast checks","CSS color tokens","rich accent palettes","high-energy accents","calm digital interfaces"],"contrastSafeWith":["#FFFFFF","#F5F5F5"],"relatedEndpoints":["https://www.colorsencyclopedia.com/api/hex/0f52ba.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/sapphire.json","https://www.colorsencyclopedia.com/api/colors/denim.json","https://www.colorsencyclopedia.com/api/colors/signal-blue.json"]}

Harmonies

{"complementary":"#B8740F","analogous":["#0FA7B8","#200FB8"],"triadic":["#B80F53","#53B80F"],"tetradic":["#B80FA7","#B8740F","#0FB820"],"splitComplementary":["#B8200F","#A7B80F"],"monochromatic":["#347FEF","#0F52BA","#082C63"]}

Variants

{"light":"#347FEF","dark":"#082C63","saturated":"#0050C7","desaturated":"#2557A2","pastel":"#6396E3","neon":"#0060F0"}

Nearest named colors

[{"slug":"sapphire","name":"Sapphire","hex":"#0F52BA","distance":0},{"slug":"denim","name":"Denim","hex":"#1560BD","distance":15.524174696260024},{"slug":"signal-blue","name":"Signal Blue","hex":"#0057B8","distance":15.937377450509228},{"slug":"cobalt-blue","name":"Cobalt Blue","hex":"#0047AB","distance":23.895606290697042},{"slug":"persian-blue","name":"Persian Blue","hex":"#1C39BB","distance":28.19574435974337}]

#0F52BA

CSS

About #0F52BA

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