#313F7D#313F7D

#313F7D is a dark, moderate blue. Relative luminance 0.057; OKLCH L 39.0% C 0.106 H 271.2°. Best body text is #FFFFFF at 9.82:1 contrast (WCAG AA passes).

Color values

HEX	#313F7D
RGB	rgb(49, 63, 125)
HSL	hsl(229, 44%, 34%)
HSV	hsv(229, 61%, 49%)
CMYK	cmyk(60.8%, 49.6%, 0%, 51%)
CIE-LAB	lab(28.61, 14.71, -37.04)
CIE-LCH	lch(28.61, 39.85, 291.66°)
OKLab	oklab(39.01% 0.0022 -0.1058)
OKLCH	oklch(39.01% 0.106 271.2)
XYZ	xyz(6.7446, 5.6881, 20.1406)
Luminance	0.0569 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313F7D #7D6F31

analogous

#31657D #313F7D #49317D

triadic

#313F7D #7D313F #3F7D31

tetradic

#313F7D #7D3165 #7D6F31 #317D49

square

#313F7D #7D3165 #7D6F31 #317D49

split-complementary

#313F7D #7D4931 #657D31

monochromatic

#0F1325 #202951 #313F7D #4255A9 #6677C3

Accessibility & contrast

On white

9.82

#313F7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.14

#313F7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313F7D

9.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313F7D	#FFFFFF	#000000	##FFFFFF
##313F7D	1.00	9.82	2.14	9.82
#FFFFFF	9.82	1.00	21.00	1.00
#000000	2.14	21.00	1.00	21.00
##FFFFFF	9.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#21477F

Deuteranopia (green-blind)

#15407C

Tritanopia (blue-blind)

#004D58

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #313f7d;
/* rgb */ color: rgb(49, 63, 125);
/* oklch */ color: oklch(39.0% 0.106 271.2);

Tailwind

colors: {
  custom: {
    50: '#7073a3',
    500: '#313f7d',
    950: '#000000',
  },
}

SCSS

$custom: #313f7d;
$custom-light: #7073a3;
$custom-dark: #000000;

JSON

{
  "hex": "#313f7d",
  "rgb": {
    "r": 49,
    "g": 63,
    "b": 125
  },
  "hsl": {
    "h": 228.947,
    "s": 43.678,
    "l": 34.118
  },
  "oklch": {
    "l": 0.39005,
    "c": 0.10579,
    "h": 271.2
  },
  "luminance": 0.05689
}

Semantic roles & 50–950 ramp

primary

#313F7D

secondary

#AA9C60

accent

#BC54D3

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#08080F

muted

#7B7B7F

Preview Lab

Preview with #313F7D

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

Preview Lab → · Contrast checker → · Palette generator →