#2337A9#2337A9

#2337A9 is a dark, vivid blue. Relative luminance 0.060; OKLCH L 40.4% C 0.182 H 268.5°. Best body text is #FFFFFF at 9.59:1 contrast (WCAG AA passes).

Color values

HEX	#2337A9
RGB	rgb(35, 55, 169)
HSL	hsl(231, 66%, 40%)
HSV	hsv(231, 79%, 66%)
CMYK	cmyk(79.3%, 67.5%, 0%, 33.7%)
CIE-LAB	lab(29.29, 34.49, -62.95)
CIE-LCH	lch(29.29, 71.78, 298.72°)
OKLab	oklab(40.42% -0.0048 -0.1823)
OKLCH	oklch(40.42% 0.182 268.5)
XYZ	xyz(9.2183, 5.9532, 38.1917)
Luminance	0.0595 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2337A9 #A99523

analogous

#237AA9 #2337A9 #5223A9

triadic

#2337A9 #A92337 #37A923

tetradic

#2337A9 #A9237A #A99523 #23A952

square

#2337A9 #A9237A #A99523 #23A952

split-complementary

#2337A9 #A95223 #7AA923

monochromatic

#0E1644 #192676 #2337A9 #344CD5 #6779DF

Accessibility & contrast

On white

9.59

#2337A9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.19

#2337A9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2337A9

9.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2337A9	#FFFFFF	#000000	##FFFFFF
##2337A9	1.00	9.59	2.19	9.59
#FFFFFF	9.59	1.00	21.00	1.00
#000000	2.19	21.00	1.00	21.00
##FFFFFF	9.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CAD

Deuteranopia (green-blind)

#003FA7

Tritanopia (blue-blind)

#00566B

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #2337a9;
/* rgb */ color: rgb(35, 55, 169);
/* oklch */ color: oklch(40.4% 0.182 268.5);

Tailwind

colors: {
  custom: {
    50: '#756ec4',
    500: '#2337a9',
    950: '#000000',
  },
}

SCSS

$custom: #2337a9;
$custom-light: #756ec4;
$custom-dark: #000000;

JSON

{
  "hex": "#2337a9",
  "rgb": {
    "r": 35,
    "g": 55,
    "b": 169
  },
  "hsl": {
    "h": 231.045,
    "s": 65.686,
    "l": 40
  },
  "oklch": {
    "l": 0.40422,
    "c": 0.18233,
    "h": 268.5
  },
  "luminance": 0.05954
}

Semantic roles & 50–950 ramp

primary

#2337A9

secondary

#C5B663

accent

#CF3FE9

background

#F7F6FC

surface

#EEEBF8

border

#C9C6D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #2337A9

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

Preview Lab → · Contrast checker → · Palette generator →