#233B83#233B83

#233B83 is a dark, vivid blue. Relative luminance 0.051; OKLCH L 37.8% C 0.125 H 266.5°. Best body text is #FFFFFF at 10.37:1 contrast (WCAG AA passes).

Color values

HEX	#233B83
RGB	rgb(35, 59, 131)
HSL	hsl(225, 58%, 33%)
HSV	hsv(225, 73%, 51%)
CMYK	cmyk(73.3%, 55%, 0%, 48.6%)
CIE-LAB	lab(27.08, 17.21, -43.30)
CIE-LCH	lch(27.08, 46.59, 291.67°)
OKLab	oklab(37.77% -0.0076 -0.1246)
OKLCH	oklch(37.77% 0.125 266.5)
XYZ	xyz(6.3524, 5.1233, 22.1224)
Luminance	0.0512 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233B83 #836B23

analogous

#236B83 #233B83 #3B2383

triadic

#233B83 #83233B #3B8323

tetradic

#233B83 #83236B #836B23 #23833B

square

#233B83 #83236B #836B23 #23833B

split-complementary

#233B83 #833B23 #6B8323

monochromatic

#090F22 #162553 #233B83 #3051B3 #5070D0

Accessibility & contrast

On white

10.37

#233B83 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.02

#233B83 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233B83

10.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233B83	#FFFFFF	#000000	##FFFFFF
##233B83	1.00	10.37	2.02	10.37
#FFFFFF	10.37	1.00	21.00	1.00
#000000	2.02	21.00	1.00	21.00
##FFFFFF	10.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#074586

Deuteranopia (green-blind)

#003C82

Tritanopia (blue-blind)

#004C59

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #233b83;
/* rgb */ color: rgb(35, 59, 131);
/* oklch */ color: oklch(37.8% 0.125 266.5);

Tailwind

colors: {
  custom: {
    50: '#6b70a8',
    500: '#233b83',
    950: '#000000',
  },
}

SCSS

$custom: #233b83;
$custom-light: #6b70a8;
$custom-dark: #000000;

JSON

{
  "hex": "#233b83",
  "rgb": {
    "r": 35,
    "g": 59,
    "b": 131
  },
  "hsl": {
    "h": 225,
    "s": 57.831,
    "l": 32.549
  },
  "oklch": {
    "l": 0.37768,
    "c": 0.12479,
    "h": 266.5
  },
  "luminance": 0.05124
}

Semantic roles & 50–950 ramp

primary

#233B83

secondary

#B49A4E

accent

#BA47E1

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#080710

muted

#7A7A7F

Preview Lab

Preview with #233B83

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

Preview Lab → · Contrast checker → · Palette generator →