#313C8E#313C8E

#313C8E is a dark, vivid blue. Relative luminance 0.058; OKLCH L 39.7% C 0.135 H 272.9°. Best body text is #FFFFFF at 9.69:1 contrast (WCAG AA passes).

Color values

HEX	#313C8E
RGB	rgb(49, 60, 142)
HSL	hsl(233, 49%, 37%)
HSV	hsv(233, 65%, 56%)
CMYK	cmyk(65.5%, 57.7%, 0%, 44.3%)
CIE-LAB	lab(29.00, 22.99, -46.98)
CIE-LCH	lch(29.00, 52.30, 296.07°)
OKLab	oklab(39.69% 0.0067 -0.135)
OKLCH	oklch(39.69% 0.135 272.9)
XYZ	xyz(7.7633, 5.8370, 26.3035)
Luminance	0.0584 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313C8E #8E8331

analogous

#316B8E #313C8E #54318E

triadic

#313C8E #8E313C #3C8E31

tetradic

#313C8E #8E316B #8E8331 #318E54

square

#313C8E #8E316B #8E8331 #318E54

split-complementary

#313C8E #8E5431 #6B8E31

monochromatic

#121633 #212961 #313C8E #414FBB #6D78CD

Accessibility & contrast

On white

9.69

#313C8E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.17

#313C8E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313C8E

9.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313C8E	#FFFFFF	#000000	##FFFFFF
##313C8E	1.00	9.69	2.17	9.69
#FFFFFF	9.69	1.00	21.00	1.00
#000000	2.17	21.00	1.00	21.00
##FFFFFF	9.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004991

Deuteranopia (green-blind)

#00408C

Tritanopia (blue-blind)

#00505F

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #313c8e;
/* rgb */ color: rgb(49, 60, 142);
/* oklch */ color: oklch(39.7% 0.135 272.9);

Tailwind

colors: {
  custom: {
    50: '#7471b0',
    500: '#313c8e',
    950: '#000000',
  },
}

SCSS

$custom: #313c8e;
$custom-light: #7471b0;
$custom-dark: #000000;

JSON

{
  "hex": "#313c8e",
  "rgb": {
    "r": 49,
    "g": 60,
    "b": 142
  },
  "hsl": {
    "h": 232.903,
    "s": 48.691,
    "l": 37.451
  },
  "oklch": {
    "l": 0.39686,
    "c": 0.13522,
    "h": 272.9
  },
  "luminance": 0.05838
}

Semantic roles & 50–950 ramp

primary

#313C8E

secondary

#B4AB67

accent

#C850D8

background

#F7F6FA

surface

#EDECF5

border

#C8C7CF

text

#090710

muted

#7B7A7F

Preview Lab

Preview with #313C8E

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

Preview Lab → · Contrast checker → · Palette generator →