#313D7C#313D7C

#313D7C is a dark, moderate blue. Relative luminance 0.054; OKLCH L 38.5% C 0.107 H 272.3°. Best body text is #FFFFFF at 10.05:1 contrast (WCAG AA passes).

Color values

HEX	#313D7C
RGB	rgb(49, 61, 124)
HSL	hsl(230, 43%, 34%)
HSV	hsv(230, 60%, 49%)
CMYK	cmyk(60.5%, 50.8%, 0%, 51.4%)
CIE-LAB	lab(27.97, 15.71, -37.45)
CIE-LCH	lch(27.97, 40.61, 292.76°)
OKLab	oklab(38.49% 0.0043 -0.107)
OKLCH	oklch(38.49% 0.107 272.3)
XYZ	xyz(6.5723, 5.4452, 19.7696)
Luminance	0.0545 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313D7C #7C7031

analogous

#31637C #313D7C #4B317C

triadic

#313D7C #7C313D #3D7C31

tetradic

#313D7C #7C3163 #7C7031 #317C4B

square

#313D7C #7C3163 #7C7031 #317C4B

split-complementary

#313D7C #7C4B31 #637C31

monochromatic

#0E1224 #202750 #313D7C #4253A8 #6574C2

Accessibility & contrast

On white

10.05

#313D7C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#313D7C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313D7C

10.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313D7C	#FFFFFF	#000000	##FFFFFF
##313D7C	1.00	10.05	2.09	10.05
#FFFFFF	10.05	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1D457E

Deuteranopia (green-blind)

#113F7B

Tritanopia (blue-blind)

#004B56

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #313d7c;
/* rgb */ color: rgb(49, 61, 124);
/* oklch */ color: oklch(38.5% 0.107 272.3);

Tailwind

colors: {
  custom: {
    50: '#7072a2',
    500: '#313d7c',
    950: '#000000',
  },
}

SCSS

$custom: #313d7c;
$custom-light: #7072a2;
$custom-dark: #000000;

JSON

{
  "hex": "#313d7c",
  "rgb": {
    "r": 49,
    "g": 61,
    "b": 124
  },
  "hsl": {
    "h": 230.4,
    "s": 43.353,
    "l": 33.922
  },
  "oklch": {
    "l": 0.38494,
    "c": 0.10708,
    "h": 272.3
  },
  "luminance": 0.05446
}

Semantic roles & 50–950 ramp

primary

#313D7C

secondary

#AA9E5F

accent

#BF55D3

background

#F7F6FA

surface

#EDECF3

border

#C8C7CD

text

#08070F

muted

#7B7A7F

Preview Lab

Preview with #313D7C

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

Preview Lab → · Contrast checker → · Palette generator →