#31639B#31639B

#31639B is a mid, moderate cyan. Relative luminance 0.119; OKLCH L 49.3% C 0.105 H 253.0°. Best body text is #FFFFFF at 6.20:1 contrast (WCAG AA passes).

Color values

HEX	#31639B
RGB	rgb(49, 99, 155)
HSL	hsl(212, 52%, 40%)
HSV	hsv(212, 68%, 61%)
CMYK	cmyk(68.4%, 36.1%, 0%, 39.2%)
CIE-LAB	lab(41.12, 2.09, -35.44)
CIE-LCH	lch(41.12, 35.50, 273.38°)
OKLab	oklab(49.25% -0.0308 -0.1006)
OKLCH	oklch(49.25% 0.105 253)
XYZ	xyz(11.6427, 11.9420, 32.6954)
Luminance	0.1194 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31639B #9B6931

analogous

#31989B #31639B #34319B

triadic

#31639B #9B3163 #639B31

tetradic

#31639B #9B3198 #9B6931 #319B34

square

#31639B #9B3198 #9B6931 #319B34

split-complementary

#31639B #9B3431 #989B31

monochromatic

#14283E #22456D #31639B #4581C4 #73A1D3

Accessibility & contrast

On white

6.20

#31639B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.39

#31639B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #31639B

6.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31639B	#FFFFFF	#000000	##FFFFFF
##31639B	1.00	6.20	3.39	6.20
#FFFFFF	6.20	1.00	21.00	1.00
#000000	3.39	21.00	1.00	21.00
##FFFFFF	6.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A669D

Deuteranopia (green-blind)

#3B5C9A

Tritanopia (blue-blind)

#007077

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #31639b;
/* rgb */ color: rgb(49, 99, 155);
/* oklch */ color: oklch(49.3% 0.105 253.0);

Tailwind

colors: {
  custom: {
    50: '#758fb9',
    500: '#31639b',
    950: '#000000',
  },
}

SCSS

$custom: #31639b;
$custom-light: #758fb9;
$custom-dark: #000000;

JSON

{
  "hex": "#31639b",
  "rgb": {
    "r": 49,
    "g": 99,
    "b": 155
  },
  "hsl": {
    "h": 211.698,
    "s": 51.961,
    "l": 40
  },
  "oklch": {
    "l": 0.49251,
    "c": 0.10521,
    "h": 253
  },
  "luminance": 0.11943
}

Semantic roles & 50–950 ramp

primary

#31639B

secondary

#BB966D

accent

#984CDB

background

#F7F8FB

surface

#EEF0F6

border

#C9CBD0

text

#090C11

muted

#7B7D80

Preview Lab

Preview with #31639B

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

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