#313F70#313F70

#313F70 is a dark, moderate blue. Relative luminance 0.054; OKLCH L 38.1% C 0.086 H 270.0°. Best body text is #FFFFFF at 10.12:1 contrast (WCAG AA passes).

Color values

HEX	#313F70
RGB	rgb(49, 63, 112)
HSL	hsl(227, 39%, 32%)
HSV	hsv(227, 56%, 44%)
CMYK	cmyk(56.3%, 43.7%, 0%, 56.1%)
CIE-LAB	lab(27.78, 10.01, -30.16)
CIE-LCH	lch(27.78, 31.78, 288.35°)
OKLab	oklab(38.1% -0.0001 -0.0856)
OKLCH	oklch(38.1% 0.086 270)
XYZ	xyz(5.9678, 5.3774, 16.0496)
Luminance	0.0538 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313F70 #706231

analogous

#315F70 #313F70 #433170

triadic

#313F70 #70313F #3F7031

tetradic

#313F70 #70315F #706231 #317043

square

#313F70 #70315F #706231 #317043

split-complementary

#313F70 #704331 #5F7031

monochromatic

#0C0F1B #1E2745 #313F70 #44579B #6175BA

Accessibility & contrast

On white

10.12

#313F70 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#313F70 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313F70

10.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313F70	#FFFFFF	#000000	##FFFFFF
##313F70	1.00	10.12	2.08	10.12
#FFFFFF	10.12	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B4572

Deuteranopia (green-blind)

#233F6F

Tritanopia (blue-blind)

#114A52

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #313f70;
/* rgb */ color: rgb(49, 63, 112);
/* oklch */ color: oklch(38.1% 0.086 270.0);

Tailwind

colors: {
  custom: {
    50: '#6e7399',
    500: '#313f70',
    950: '#000000',
  },
}

SCSS

$custom: #313f70;
$custom-light: #6e7399;
$custom-dark: #000000;

JSON

{
  "hex": "#313f70",
  "rgb": {
    "r": 49,
    "g": 63,
    "b": 112
  },
  "hsl": {
    "h": 226.667,
    "s": 39.13,
    "l": 31.569
  },
  "oklch": {
    "l": 0.38105,
    "c": 0.08558,
    "h": 270
  },
  "luminance": 0.05378
}

Semantic roles & 50–950 ramp

primary

#313F70

secondary

#A1925C

accent

#B559CF

background

#F6F6F9

surface

#ECECF2

border

#C7C7CC

text

#07080E

muted

#7A7B7E

Preview Lab

Preview with #313F70

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

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