#313B7D#313B7D

#313B7D is a dark, moderate blue. Relative luminance 0.053; OKLCH L 38.1% C 0.111 H 273.5°. Best body text is #FFFFFF at 10.23:1 contrast (WCAG AA passes).

Color values

HEX	#313B7D
RGB	rgb(49, 59, 125)
HSL	hsl(232, 44%, 34%)
HSV	hsv(232, 61%, 49%)
CMYK	cmyk(60.8%, 52.8%, 0%, 51%)
CIE-LAB	lab(27.47, 17.44, -38.88)
CIE-LCH	lch(27.47, 42.61, 294.16°)
OKLab	oklab(38.14% 0.0067 -0.1112)
OKLCH	oklch(38.14% 0.111 273.5)
XYZ	xyz(6.5310, 5.2611, 20.0694)
Luminance	0.0526 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313B7D #7D7331

analogous

#31617D #313B7D #4D317D

triadic

#313B7D #7D313B #3B7D31

tetradic

#313B7D #7D3161 #7D7331 #317D4D

square

#313B7D #7D3161 #7D7331 #317D4D

split-complementary

#313B7D #7D4D31 #617D31

monochromatic

#0F1125 #202651 #313B7D #4250A9 #6672C3

Accessibility & contrast

On white

10.23

#313B7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.05

#313B7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313B7D

10.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313B7D	#FFFFFF	#000000	##FFFFFF
##313B7D	1.00	10.23	2.05	10.23
#FFFFFF	10.23	1.00	21.00	1.00
#000000	2.05	21.00	1.00	21.00
##FFFFFF	10.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#17447F

Deuteranopia (green-blind)

#073E7C

Tritanopia (blue-blind)

#004A56

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #313b7d;
/* rgb */ color: rgb(49, 59, 125);
/* oklch */ color: oklch(38.1% 0.111 273.5);

Tailwind

colors: {
  custom: {
    50: '#7170a3',
    500: '#313b7d',
    950: '#000000',
  },
}

SCSS

$custom: #313b7d;
$custom-light: #7170a3;
$custom-dark: #000000;

JSON

{
  "hex": "#313b7d",
  "rgb": {
    "r": 49,
    "g": 59,
    "b": 125
  },
  "hsl": {
    "h": 232.105,
    "s": 43.678,
    "l": 34.118
  },
  "oklch": {
    "l": 0.38137,
    "c": 0.11143,
    "h": 273.5
  },
  "luminance": 0.05262
}

Semantic roles & 50–950 ramp

primary

#313B7D

secondary

#AAA060

accent

#C354D3

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#08070F

muted

#7B7A7F

Preview Lab

Preview with #313B7D

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

Preview Lab → · Contrast checker → · Palette generator →