#233C73#233C73

#233C73 is a dark, moderate blue. Relative luminance 0.048; OKLCH L 36.8% C 0.100 H 263.8°. Best body text is #FFFFFF at 10.68:1 contrast (WCAG AA passes).

Color values

HEX	#233C73
RGB	rgb(35, 60, 115)
HSL	hsl(221, 53%, 29%)
HSV	hsv(221, 70%, 45%)
CMYK	cmyk(69.6%, 47.8%, 0%, 54.9%)
CIE-LAB	lab(26.23, 10.20, -34.59)
CIE-LCH	lch(26.23, 36.06, 286.43°)
OKLab	oklab(36.75% -0.0107 -0.0989)
OKLCH	oklch(36.75% 0.1 263.8)
XYZ	xyz(5.4024, 4.8263, 16.8632)
Luminance	0.0483 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233C73 #735A23

analogous

#236473 #233C73 #322373

triadic

#233C73 #73233C #3C7323

tetradic

#233C73 #732364 #735A23 #237332

square

#233C73 #732364 #735A23 #237332

split-complementary

#233C73 #733223 #647323

monochromatic

#070C17 #152444 #233C73 #3154A2 #4970C8

Accessibility & contrast

On white

10.68

#233C73 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.97

#233C73 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233C73

10.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233C73	#FFFFFF	#000000	##FFFFFF
##233C73	1.00	10.68	1.97	10.68
#FFFFFF	10.68	1.00	21.00	1.00
#000000	1.97	21.00	1.00	21.00
##FFFFFF	10.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#214275

Deuteranopia (green-blind)

#123B72

Tritanopia (blue-blind)

#004952

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #233c73;
/* rgb */ color: rgb(35, 60, 115);
/* oklch */ color: oklch(36.8% 0.100 263.8);

Tailwind

colors: {
  custom: {
    50: '#68719c',
    500: '#233c73',
    950: '#000000',
  },
}

SCSS

$custom: #233c73;
$custom-light: #68719c;
$custom-dark: #000000;

JSON

{
  "hex": "#233c73",
  "rgb": {
    "r": 35,
    "g": 60,
    "b": 115
  },
  "hsl": {
    "h": 221.25,
    "s": 53.333,
    "l": 29.412
  },
  "oklch": {
    "l": 0.36755,
    "c": 0.0995,
    "h": 263.8
  },
  "luminance": 0.04827
}

Semantic roles & 50–950 ramp

primary

#233C73

secondary

#A68A4C

accent

#AF4BDD

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#07070E

muted

#7A7A7E

Preview Lab

Preview with #233C73

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

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