#31437C#31437C

#31437C is a dark, moderate blue. Relative luminance 0.061; OKLCH L 39.8% C 0.099 H 268.5°. Best body text is #FFFFFF at 9.44:1 contrast (WCAG AA passes).

Color values

HEX	#31437C
RGB	rgb(49, 67, 124)
HSL	hsl(226, 43%, 34%)
HSV	hsv(226, 60%, 49%)
CMYK	cmyk(60.5%, 46%, 0%, 51.4%)
CIE-LAB	lab(29.72, 11.63, -34.64)
CIE-LCH	lch(29.72, 36.54, 288.55°)
OKLab	oklab(39.83% -0.0026 -0.0987)
OKLCH	oklch(39.83% 0.099 268.5)
XYZ	xyz(6.9106, 6.1220, 19.8824)
Luminance	0.0612 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31437C #7C6A31

analogous

#31697C #31437C #45317C

triadic

#31437C #7C3143 #437C31

tetradic

#31437C #7C3169 #7C6A31 #317C45

square

#31437C #7C3169 #7C6A31 #317C45

split-complementary

#31437C #7C4531 #697C31

monochromatic

#0E1424 #202B50 #31437C #425BA8 #657CC2

Accessibility & contrast

On white

9.44

#31437C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.22

#31437C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31437C

9.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31437C	#FFFFFF	#000000	##FFFFFF
##31437C	1.00	9.44	2.22	9.44
#FFFFFF	9.44	1.00	21.00	1.00
#000000	2.22	21.00	1.00	21.00
##FFFFFF	9.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#294A7E

Deuteranopia (green-blind)

#1F437B

Tritanopia (blue-blind)

#005059

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #31437c;
/* rgb */ color: rgb(49, 67, 124);
/* oklch */ color: oklch(39.8% 0.099 268.5);

Tailwind

colors: {
  custom: {
    50: '#7076a2',
    500: '#31437c',
    950: '#000000',
  },
}

SCSS

$custom: #31437c;
$custom-light: #7076a2;
$custom-dark: #000000;

JSON

{
  "hex": "#31437c",
  "rgb": {
    "r": 49,
    "g": 67,
    "b": 124
  },
  "hsl": {
    "h": 225.6,
    "s": 43.353,
    "l": 33.922
  },
  "oklch": {
    "l": 0.39828,
    "c": 0.09872,
    "h": 268.5
  },
  "luminance": 0.06123
}

Semantic roles & 50–950 ramp

primary

#31437C

secondary

#AA985F

accent

#B555D3

background

#F7F7FA

surface

#EDEDF3

border

#C8C8CD

text

#08080F

muted

#7B7B7F

Preview Lab

Preview with #31437C

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

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