#233B73#233B73

#233B73 is a dark, moderate blue. Relative luminance 0.047; OKLCH L 36.5% C 0.101 H 264.5°. Best body text is #FFFFFF at 10.80:1 contrast (WCAG AA passes).

Color values

HEX	#233B73
RGB	rgb(35, 59, 115)
HSL	hsl(222, 53%, 29%)
HSV	hsv(222, 70%, 45%)
CMYK	cmyk(69.6%, 48.7%, 0%, 54.9%)
CIE-LAB	lab(25.93, 10.90, -35.08)
CIE-LCH	lch(25.93, 36.73, 287.26°)
OKLab	oklab(36.52% -0.0097 -0.1004)
OKLCH	oklch(36.52% 0.101 264.5)
XYZ	xyz(5.3505, 4.7225, 16.8459)
Luminance	0.0472 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233B73 #735B23

analogous

#236373 #233B73 #332373

triadic

#233B73 #73233B #3B7323

tetradic

#233B73 #732363 #735B23 #237333

square

#233B73 #732363 #735B23 #237333

split-complementary

#233B73 #733323 #637323

monochromatic

#070C17 #152344 #233B73 #3153A2 #496FC8

Accessibility & contrast

On white

10.80

#233B73 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#233B73 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233B73

10.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233B73	#FFFFFF	#000000	##FFFFFF
##233B73	1.00	10.80	1.94	10.80
#FFFFFF	10.80	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F4175

Deuteranopia (green-blind)

#0F3A72

Tritanopia (blue-blind)

#004851

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #233b73;
/* rgb */ color: rgb(35, 59, 115);
/* oklch */ color: oklch(36.5% 0.101 264.5);

Tailwind

colors: {
  custom: {
    50: '#68709c',
    500: '#233b73',
    950: '#000000',
  },
}

SCSS

$custom: #233b73;
$custom-light: #68709c;
$custom-dark: #000000;

JSON

{
  "hex": "#233b73",
  "rgb": {
    "r": 35,
    "g": 59,
    "b": 115
  },
  "hsl": {
    "h": 222,
    "s": 53.333,
    "l": 29.412
  },
  "oklch": {
    "l": 0.36521,
    "c": 0.10084,
    "h": 264.5
  },
  "luminance": 0.04723
}

Semantic roles & 50–950 ramp

primary

#233B73

secondary

#A68B4C

accent

#B14BDD

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#07070E

muted

#7A7A7E

Preview Lab

Preview with #233B73

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

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