#2F337B#2F337B

#2F337B is a dark, vivid blue. Relative luminance 0.044; OKLCH L 36.2% C 0.120 H 276.2°. Best body text is #FFFFFF at 11.17:1 contrast (WCAG AA passes).

Color values

HEX	#2F337B
RGB	rgb(47, 51, 123)
HSL	hsl(237, 45%, 33%)
HSV	hsv(237, 62%, 48%)
CMYK	cmyk(61.8%, 58.5%, 0%, 51.8%)
CIE-LAB	lab(24.96, 21.77, -41.68)
CIE-LCH	lch(24.96, 47.02, 297.58°)
OKLab	oklab(36.17% 0.0129 -0.1196)
OKLCH	oklch(36.17% 0.12 276.2)
XYZ	xyz(5.9301, 4.4016, 19.2721)
Luminance	0.0440 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F337B #7B772F

analogous

#2F597B #2F337B #512F7B

triadic

#2F337B #7B2F33 #337B2F

tetradic

#2F337B #7B2F59 #7B772F #2F7B51

square

#2F337B #7B2F59 #7B772F #2F7B51

split-complementary

#2F337B #7B512F #597B2F

monochromatic

#0D0E22 #1E214F #2F337B #4045A7 #6267C3

Accessibility & contrast

On white

11.17

#2F337B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#2F337B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F337B

11.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F337B	#FFFFFF	#000000	##FFFFFF
##2F337B	1.00	11.17	1.88	11.17
#FFFFFF	11.17	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003F7D

Deuteranopia (green-blind)

#00387A

Tritanopia (blue-blind)

#004451

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #2f337b;
/* rgb */ color: rgb(47, 51, 123);
/* oklch */ color: oklch(36.2% 0.120 276.2);

Tailwind

colors: {
  custom: {
    50: '#706aa2',
    500: '#2f337b',
    950: '#000000',
  },
}

SCSS

$custom: #2f337b;
$custom-light: #706aa2;
$custom-dark: #000000;

JSON

{
  "hex": "#2f337b",
  "rgb": {
    "r": 47,
    "g": 51,
    "b": 123
  },
  "hsl": {
    "h": 236.842,
    "s": 44.706,
    "l": 33.333
  },
  "oklch": {
    "l": 0.36171,
    "c": 0.12031,
    "h": 276.2
  },
  "luminance": 0.04402
}

Semantic roles & 50–950 ramp

primary

#2F337B

secondary

#AAA65C

accent

#CE53D4

background

#F7F6FA

surface

#EDEBF3

border

#C8C6CD

text

#08060F

muted

#7B7A7F

Preview Lab

Preview with #2F337B

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

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