#31538D#31538D

#31538D is a dark, moderate blue. Relative luminance 0.088; OKLCH L 44.6% C 0.104 H 260.4°. Best body text is #FFFFFF at 7.63:1 contrast (WCAG AA passes).

Color values

HEX	#31538D
RGB	rgb(49, 83, 141)
HSL	hsl(218, 48%, 37%)
HSV	hsv(218, 65%, 55%)
CMYK	cmyk(65.2%, 41.1%, 0%, 44.7%)
CIE-LAB	lab(35.52, 7.21, -35.89)
CIE-LCH	lch(35.52, 36.60, 281.37°)
OKLab	oklab(44.63% -0.0172 -0.1021)
OKLCH	oklch(44.63% 0.104 260.4)
XYZ	xyz(9.1659, 8.7617, 26.4023)
Luminance	0.0876 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31538D #8D6B31

analogous

#31818D #31538D #3D318D

triadic

#31538D #8D3153 #538D31

tetradic

#31538D #8D3181 #8D6B31 #318D3D

square

#31538D #8D3181 #8D6B31 #318D3D

split-complementary

#31538D #8D3D31 #818D31

monochromatic

#111E32 #213860 #31538D #416EBA #6C90CC

Accessibility & contrast

On white

7.63

#31538D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.75

#31538D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31538D

7.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31538D	#FFFFFF	#000000	##FFFFFF
##31538D	1.00	7.63	2.75	7.63
#FFFFFF	7.63	1.00	21.00	1.00
#000000	2.75	21.00	1.00	21.00
##FFFFFF	7.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#39588F

Deuteranopia (green-blind)

#2C508C

Tritanopia (blue-blind)

#006069

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #31538d;
/* rgb */ color: rgb(49, 83, 141);
/* oklch */ color: oklch(44.6% 0.104 260.4);

Tailwind

colors: {
  custom: {
    50: '#7383af',
    500: '#31538d',
    950: '#000000',
  },
}

SCSS

$custom: #31538d;
$custom-light: #7383af;
$custom-dark: #000000;

JSON

{
  "hex": "#31538d",
  "rgb": {
    "r": 49,
    "g": 83,
    "b": 141
  },
  "hsl": {
    "h": 217.826,
    "s": 48.421,
    "l": 37.255
  },
  "oklch": {
    "l": 0.44634,
    "c": 0.10356,
    "h": 260.4
  },
  "luminance": 0.08763
}

Semantic roles & 50–950 ramp

primary

#31538D

secondary

#B49766

accent

#A650D8

background

#F7F7FA

surface

#EDEEF4

border

#C8C9CE

text

#090A10

muted

#7B7C7F

Preview Lab

Preview with #31538D

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

Preview Lab → · Contrast checker → · Palette generator →