#2B378C#2B378C

#2B378C is a dark, vivid blue. Relative luminance 0.051; OKLCH L 38.1% C 0.141 H 271.8°. Best body text is #FFFFFF at 10.36:1 contrast (WCAG AA passes).

Color values

HEX	#2B378C
RGB	rgb(43, 55, 140)
HSL	hsl(233, 53%, 36%)
HSV	hsv(233, 69%, 55%)
CMYK	cmyk(69.3%, 60.7%, 0%, 45.1%)
CIE-LAB	lab(27.13, 24.63, -48.80)
CIE-LCH	lch(27.13, 54.66, 296.78°)
OKLab	oklab(38.14% 0.0045 -0.1406)
OKLCH	oklch(38.14% 0.141 271.8)
XYZ	xyz(7.0945, 5.1388, 25.4239)
Luminance	0.0514 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B378C #8C802B

analogous

#2B678C #2B378C #4F2B8C

triadic

#2B378C #8C2B37 #378C2B

tetradic

#2B378C #8C2B67 #8C802B #2B8C4F

square

#2B378C #8C2B67 #8C802B #2B8C4F

split-complementary

#2B378C #8C4F2B #678C2B

monochromatic

#0E122E #1D255D #2B378C #3949BB #6270CF

Accessibility & contrast

On white

10.36

#2B378C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#2B378C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B378C

10.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B378C	#FFFFFF	#000000	##FFFFFF
##2B378C	1.00	10.36	2.03	10.36
#FFFFFF	10.36	1.00	21.00	1.00
#000000	2.03	21.00	1.00	21.00
##FFFFFF	10.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00458F

Deuteranopia (green-blind)

#003C8A

Tritanopia (blue-blind)

#004C5C

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #2b378c;
/* rgb */ color: rgb(43, 55, 140);
/* oklch */ color: oklch(38.1% 0.141 271.8);

Tailwind

colors: {
  custom: {
    50: '#716dae',
    500: '#2b378c',
    950: '#000000',
  },
}

SCSS

$custom: #2b378c;
$custom-light: #716dae;
$custom-dark: #000000;

JSON

{
  "hex": "#2b378c",
  "rgb": {
    "r": 43,
    "g": 55,
    "b": 140
  },
  "hsl": {
    "h": 232.577,
    "s": 53.005,
    "l": 35.882
  },
  "oklch": {
    "l": 0.38143,
    "c": 0.14069,
    "h": 271.8
  },
  "luminance": 0.05139
}

Semantic roles & 50–950 ramp

primary

#2B378C

secondary

#B5AA5E

accent

#CA4BDC

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#090710

muted

#7B7A7F

Preview Lab

Preview with #2B378C

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

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