#2A37A8#2A37A8

#2A37A8 is a dark, vivid blue. Relative luminance 0.061; OKLCH L 40.7% C 0.179 H 270.7°. Best body text is #FFFFFF at 9.50:1 contrast (WCAG AA passes).

Color values

HEX	#2A37A8
RGB	rgb(42, 55, 168)
HSL	hsl(234, 60%, 41%)
HSV	hsv(234, 75%, 66%)
CMYK	cmyk(75%, 67.3%, 0%, 34.1%)
CIE-LAB	lab(29.54, 34.82, -61.94)
CIE-LCH	lch(29.54, 71.05, 299.34°)
OKLab	oklab(40.67% 0.0021 -0.1791)
OKLCH	oklch(40.67% 0.179 270.7)
XYZ	xyz(9.3865, 6.0508, 37.7114)
Luminance	0.0605 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2A37A8 #A89B2A

analogous

#2A76A8 #2A37A8 #5C2AA8

triadic

#2A37A8 #A82A37 #37A82A

tetradic

#2A37A8 #A82A76 #A89B2A #2AA85C

square

#2A37A8 #A82A76 #A89B2A #2AA85C

split-complementary

#2A37A8 #A85C2A #76A82A

monochromatic

#121746 #1E2777 #2A37A8 #404FCF #717CDB

Accessibility & contrast

On white

9.50

#2A37A8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.21

#2A37A8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2A37A8

9.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2A37A8	#FFFFFF	#000000	##FFFFFF
##2A37A8	1.00	9.50	2.21	9.50
#FFFFFF	9.50	1.00	21.00	1.00
#000000	2.21	21.00	1.00	21.00
##FFFFFF	9.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CAC

Deuteranopia (green-blind)

#0040A6

Tritanopia (blue-blind)

#00556A

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #2a37a8;
/* rgb */ color: rgb(42, 55, 168);
/* oklch */ color: oklch(40.7% 0.179 270.7);

Tailwind

colors: {
  custom: {
    50: '#776ec3',
    500: '#2a37a8',
    950: '#000000',
  },
}

SCSS

$custom: #2a37a8;
$custom-light: #776ec3;
$custom-dark: #000000;

JSON

{
  "hex": "#2a37a8",
  "rgb": {
    "r": 42,
    "g": 55,
    "b": 168
  },
  "hsl": {
    "h": 233.81,
    "s": 60,
    "l": 41.176
  },
  "oklch": {
    "l": 0.40666,
    "c": 0.17916,
    "h": 270.7
  },
  "luminance": 0.06052
}

Semantic roles & 50–950 ramp

primary

#2A37A8

secondary

#C3BA6B

accent

#D345E3

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #2A37A8

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

Preview Lab → · Contrast checker → · Palette generator →