#2B378E#2B378E

#2B378E is a dark, vivid blue. Relative luminance 0.052; OKLCH L 38.3% C 0.144 H 271.8°. Best body text is #FFFFFF at 10.30:1 contrast (WCAG AA passes).

Color values

HEX	#2B378E
RGB	rgb(43, 55, 142)
HSL	hsl(233, 54%, 36%)
HSV	hsv(233, 70%, 56%)
CMYK	cmyk(69.7%, 61.3%, 0%, 44.3%)
CIE-LAB	lab(27.29, 25.38, -49.77)
CIE-LCH	lch(27.29, 55.86, 297.02°)
OKLab	oklab(38.32% 0.0045 -0.1435)
OKLCH	oklch(38.32% 0.144 271.8)
XYZ	xyz(7.2433, 5.1983, 26.2076)
Luminance	0.0520 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B378E #8E822B

analogous

#2B698E #2B378E #512B8E

triadic

#2B378E #8E2B37 #378E2B

tetradic

#2B378E #8E2B69 #8E822B #2B8E51

square

#2B378E #8E2B69 #8E822B #2B8E51

split-complementary

#2B378E #8E512B #698E2B

monochromatic

#0F1330 #1D255F #2B378E #3949BD #6371D0

Accessibility & contrast

On white

10.30

#2B378E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.04

#2B378E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B378E

10.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B378E	#FFFFFF	#000000	##FFFFFF
##2B378E	1.00	10.30	2.04	10.30
#FFFFFF	10.30	1.00	21.00	1.00
#000000	2.04	21.00	1.00	21.00
##FFFFFF	10.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004591

Deuteranopia (green-blind)

#003C8C

Tritanopia (blue-blind)

#004D5D

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #2b378e;
/* rgb */ color: rgb(43, 55, 142);
/* oklch */ color: oklch(38.3% 0.144 271.8);

Tailwind

colors: {
  custom: {
    50: '#726db0',
    500: '#2b378e',
    950: '#000000',
  },
}

SCSS

$custom: #2b378e;
$custom-light: #726db0;
$custom-dark: #000000;

JSON

{
  "hex": "#2b378e",
  "rgb": {
    "r": 43,
    "g": 55,
    "b": 142
  },
  "hsl": {
    "h": 232.727,
    "s": 53.514,
    "l": 36.275
  },
  "oklch": {
    "l": 0.38318,
    "c": 0.14353,
    "h": 271.8
  },
  "luminance": 0.05199
}

Semantic roles & 50–950 ramp

primary

#2B378E

secondary

#B6AB5F

accent

#CB4BDD

background

#F7F6FA

surface

#EDEBF5

border

#C8C6CF

text

#090710

muted

#7B7A7F

Preview Lab

Preview with #2B378E

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

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