#2A378B#2A378B

#2A378B is a dark, vivid blue. Relative luminance 0.051; OKLCH L 38.0% C 0.140 H 271.4°. Best body text is #FFFFFF at 10.41:1 contrast (WCAG AA passes).

Color values

HEX	#2A378B
RGB	rgb(42, 55, 139)
HSL	hsl(232, 54%, 35%)
HSV	hsv(232, 70%, 55%)
CMYK	cmyk(69.8%, 60.4%, 0%, 45.5%)
CIE-LAB	lab(26.98, 24.10, -48.42)
CIE-LCH	lch(26.98, 54.08, 296.47°)
OKLab	oklab(38% 0.0034 -0.1395)
OKLCH	oklch(38% 0.14 271.4)
XYZ	xyz(6.9797, 5.0880, 25.0354)
Luminance	0.0509 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2A378B #8B7E2A

analogous

#2A678B #2A378B #4D2A8B

triadic

#2A378B #8B2A37 #378B2A

tetradic

#2A378B #8B2A67 #8B7E2A #2A8B4D

square

#2A378B #8B2A67 #8B7E2A #2A8B4D

split-complementary

#2A378B #8B4D2A #678B2A

monochromatic

#0E122D #1C245C #2A378B #384ABA #606FCF

Accessibility & contrast

On white

10.41

#2A378B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.02

#2A378B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2A378B

10.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2A378B	#FFFFFF	#000000	##FFFFFF
##2A378B	1.00	10.41	2.02	10.41
#FFFFFF	10.41	1.00	21.00	1.00
#000000	2.02	21.00	1.00	21.00
##FFFFFF	10.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00448E

Deuteranopia (green-blind)

#003B89

Tritanopia (blue-blind)

#004C5B

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #2a378b;
/* rgb */ color: rgb(42, 55, 139);
/* oklch */ color: oklch(38.0% 0.140 271.4);

Tailwind

colors: {
  custom: {
    50: '#706dae',
    500: '#2a378b',
    950: '#000000',
  },
}

SCSS

$custom: #2a378b;
$custom-light: #706dae;
$custom-dark: #000000;

JSON

{
  "hex": "#2a378b",
  "rgb": {
    "r": 42,
    "g": 55,
    "b": 139
  },
  "hsl": {
    "h": 231.959,
    "s": 53.591,
    "l": 35.49
  },
  "oklch": {
    "l": 0.37996,
    "c": 0.13955,
    "h": 271.4
  },
  "luminance": 0.05089
}

Semantic roles & 50–950 ramp

primary

#2A378B

secondary

#B5A95C

accent

#C94BDD

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #2A378B

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

Preview Lab → · Contrast checker → · Palette generator →