#313D8F#313D8F

#313D8F is a dark, vivid blue. Relative luminance 0.060; OKLCH L 40.0% C 0.135 H 272.5°. Best body text is #FFFFFF at 9.57:1 contrast (WCAG AA passes).

Color values

HEX	#313D8F
RGB	rgb(49, 61, 143)
HSL	hsl(232, 49%, 38%)
HSV	hsv(232, 66%, 56%)
CMYK	cmyk(65.7%, 57.3%, 0%, 43.9%)
CIE-LAB	lab(29.34, 22.68, -47.03)
CIE-LCH	lch(29.34, 52.22, 295.74°)
OKLab	oklab(39.97% 0.0058 -0.1352)
OKLCH	oklch(39.97% 0.135 272.5)
XYZ	xyz(7.8916, 5.9729, 26.7183)
Luminance	0.0597 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313D8F #8F8331

analogous

#316C8F #313D8F #54318F

triadic

#313D8F #8F313D #3D8F31

tetradic

#313D8F #8F316C #8F8331 #318F54

square

#313D8F #8F316C #8F8331 #318F54

split-complementary

#313D8F #8F5431 #6C8F31

monochromatic

#121634 #212A61 #313D8F #4150BD #6D7ACD

Accessibility & contrast

On white

9.57

#313D8F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.19

#313D8F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313D8F

9.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313D8F	#FFFFFF	#000000	##FFFFFF
##313D8F	1.00	9.57	2.19	9.57
#FFFFFF	9.57	1.00	21.00	1.00
#000000	2.19	21.00	1.00	21.00
##FFFFFF	9.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004992

Deuteranopia (green-blind)

#00418D

Tritanopia (blue-blind)

#005160

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #313d8f;
/* rgb */ color: rgb(49, 61, 143);
/* oklch */ color: oklch(40.0% 0.135 272.5);

Tailwind

colors: {
  custom: {
    50: '#7472b0',
    500: '#313d8f',
    950: '#000000',
  },
}

SCSS

$custom: #313d8f;
$custom-light: #7472b0;
$custom-dark: #000000;

JSON

{
  "hex": "#313d8f",
  "rgb": {
    "r": 49,
    "g": 61,
    "b": 143
  },
  "hsl": {
    "h": 232.34,
    "s": 48.958,
    "l": 37.647
  },
  "oklch": {
    "l": 0.39969,
    "c": 0.13532,
    "h": 272.5
  },
  "luminance": 0.05974
}

Semantic roles & 50–950 ramp

primary

#313D8F

secondary

#B5AB67

accent

#C74FD9

background

#F7F6FA

surface

#EDECF5

border

#C8C7CF

text

#090811

muted

#7B7B80

Preview Lab

Preview with #313D8F

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

Preview Lab → · Contrast checker → · Palette generator →