#3F89CB#3F89CB

#3F89CB is a mid, vivid cyan. Relative luminance 0.233; OKLCH L 61.3% C 0.125 H 248.2°. Best body text is #000000 at 5.65:1 contrast (WCAG AA passes).

Color values

HEX	#3F89CB
RGB	rgb(63, 137, 203)
HSL	hsl(208, 57%, 52%)
HSV	hsv(208, 69%, 80%)
CMYK	cmyk(69%, 32.5%, 0%, 20.4%)
CIE-LAB	lab(55.34, -1.56, -40.82)
CIE-LCH	lch(55.34, 40.85, 267.81°)
OKLab	oklab(61.34% -0.0461 -0.1156)
OKLCH	oklch(61.34% 0.125 248.2)
XYZ	xyz(21.7710, 23.2576, 59.8301)
Luminance	0.2326 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F89CB #CB813F

analogous

#3FCBC7 #3F89CB #3F43CB

triadic

#3F89CB #CB3F89 #89CB3F

tetradic

#3F89CB #C73FCB #CB813F #43CB3F

square

#3F89CB #C73FCB #CB813F #43CB3F

split-complementary

#3F89CB #CB3F43 #CBC73F

monochromatic

#1F4A71 #2C6AA1 #3F89CB #6FA7D8 #9FC4E5

Accessibility & contrast

On white

3.72

#3F89CB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.65

#3F89CB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F89CB

5.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F89CB	#FFFFFF	#000000	##000000
##3F89CB	1.00	3.72	5.65	5.65
#FFFFFF	3.72	1.00	21.00	21.00
#000000	5.65	21.00	1.00	1.00
##000000	5.65	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6C8CCE

Deuteranopia (green-blind)

#587FCA

Tritanopia (blue-blind)

#0099A1

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #3f89cb;
/* rgb */ color: rgb(63, 137, 203);
/* oklch */ color: oklch(61.3% 0.125 248.2);

Tailwind

colors: {
  custom: {
    50: '#84abdb',
    500: '#3f89cb',
    950: '#000000',
  },
}

SCSS

$custom: #3f89cb;
$custom-light: #84abdb;
$custom-dark: #000000;

JSON

{
  "hex": "#3f89cb",
  "rgb": {
    "r": 63,
    "g": 137,
    "b": 203
  },
  "hsl": {
    "h": 208.286,
    "s": 57.377,
    "l": 52.157
  },
  "oklch": {
    "l": 0.61344,
    "c": 0.12451,
    "h": 248.2
  },
  "luminance": 0.2326
}

Semantic roles & 50–950 ramp

primary

#3F89CB

secondary

#D1B194

accent

#9047E1

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C1015

muted

#7D7F83

Preview Lab

Preview with #3F89CB

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →