#31739B#31739B

#31739B is a mid, moderate cyan. Relative luminance 0.153; OKLCH L 53.1% C 0.092 H 238.5°. Best body text is #FFFFFF at 5.18:1 contrast (WCAG AA passes).

Color values

HEX	#31739B
RGB	rgb(49, 115, 155)
HSL	hsl(203, 52%, 40%)
HSV	hsv(203, 68%, 61%)
CMYK	cmyk(68.4%, 25.8%, 0%, 39.2%)
CIE-LAB	lab(46.01, -7.65, -27.76)
CIE-LCH	lch(46.01, 28.80, 254.60°)
OKLab	oklab(53.11% -0.0478 -0.0781)
OKLCH	oklch(53.11% 0.092 238.5)
XYZ	xyz(13.3115, 15.2796, 33.2517)
Luminance	0.1528 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31739B #9B5931

analogous

#319B8E #31739B #313E9B

triadic

#31739B #9B3173 #739B31

tetradic

#31739B #8E319B #9B5931 #3E9B31

square

#31739B #8E319B #9B5931 #3E9B31

split-complementary

#31739B #9B313E #9B8E31

monochromatic

#142E3E #22506D #31739B #4594C4 #73AFD3

Accessibility & contrast

On white

5.18

#31739B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.06

#31739B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #31739B

5.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31739B	#FFFFFF	#000000	##FFFFFF
##31739B	1.00	5.18	4.06	5.18
#FFFFFF	5.18	1.00	21.00	1.00
#000000	4.06	21.00	1.00	21.00
##FFFFFF	5.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#60739D

Deuteranopia (green-blind)

#52689A

Tritanopia (blue-blind)

#007D81

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #31739b;
/* rgb */ color: rgb(49, 115, 155);
/* oklch */ color: oklch(53.1% 0.092 238.5);

Tailwind

colors: {
  custom: {
    50: '#759bb8',
    500: '#31739b',
    950: '#000000',
  },
}

SCSS

$custom: #31739b;
$custom-light: #759bb8;
$custom-dark: #000000;

JSON

{
  "hex": "#31739b",
  "rgb": {
    "r": 49,
    "g": 115,
    "b": 155
  },
  "hsl": {
    "h": 202.642,
    "s": 51.961,
    "l": 40
  },
  "oklch": {
    "l": 0.53105,
    "c": 0.09157,
    "h": 238.5
  },
  "luminance": 0.15281
}

Semantic roles & 50–950 ramp

primary

#31739B

secondary

#BB8A6D

accent

#824CDB

background

#F7F9FB

surface

#EEF2F6

border

#C9CCD0

text

#090E11

muted

#7B7E80

Preview Lab

Preview with #31739B

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

Preview Lab → · Contrast checker → · Palette generator →