#313E7B#313E7B

#313E7B is a dark, moderate blue. Relative luminance 0.055; OKLCH L 38.6% C 0.104 H 271.7°. Best body text is #FFFFFF at 9.97:1 contrast (WCAG AA passes).

Color values

HEX	#313E7B
RGB	rgb(49, 62, 123)
HSL	hsl(229, 43%, 34%)
HSV	hsv(229, 60%, 48%)
CMYK	cmyk(60.2%, 49.6%, 0%, 51.8%)
CIE-LAB	lab(28.19, 14.66, -36.46)
CIE-LCH	lch(28.19, 39.30, 291.91°)
OKLab	oklab(38.64% 0.0031 -0.1041)
OKLCH	oklch(38.64% 0.104 271.7)
XYZ	xyz(6.5632, 5.5278, 19.4562)
Luminance	0.0553 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313E7B #7B6E31

analogous

#31637B #313E7B #49317B

triadic

#313E7B #7B313E #3E7B31

tetradic

#313E7B #7B3163 #7B6E31 #317B49

square

#313E7B #7B3163 #7B6E31 #317B49

split-complementary

#313E7B #7B4931 #637B31

monochromatic

#0E1223 #20284F #313E7B #4254A7 #6575C2

Accessibility & contrast

On white

9.97

#313E7B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.11

#313E7B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313E7B

9.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313E7B	#FFFFFF	#000000	##FFFFFF
##313E7B	1.00	9.97	2.11	9.97
#FFFFFF	9.97	1.00	21.00	1.00
#000000	2.11	21.00	1.00	21.00
##FFFFFF	9.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#20467D

Deuteranopia (green-blind)

#153F7A

Tritanopia (blue-blind)

#004C56

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #313e7b;
/* rgb */ color: rgb(49, 62, 123);
/* oklch */ color: oklch(38.6% 0.104 271.7);

Tailwind

colors: {
  custom: {
    50: '#7073a1',
    500: '#313e7b',
    950: '#000000',
  },
}

SCSS

$custom: #313e7b;
$custom-light: #7073a1;
$custom-dark: #000000;

JSON

{
  "hex": "#313e7b",
  "rgb": {
    "r": 49,
    "g": 62,
    "b": 123
  },
  "hsl": {
    "h": 229.459,
    "s": 43.023,
    "l": 33.725
  },
  "oklch": {
    "l": 0.3864,
    "c": 0.10413,
    "h": 271.7
  },
  "luminance": 0.05528
}

Semantic roles & 50–950 ramp

primary

#313E7B

secondary

#A99C5F

accent

#BD55D3

background

#F7F6FA

surface

#EDECF3

border

#C8C7CD

text

#08080F

muted

#7B7B7F

Preview Lab

Preview with #313E7B

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

Preview Lab → · Contrast checker → · Palette generator →