#233B80#233B80

#233B80 is a dark, vivid blue. Relative luminance 0.050; OKLCH L 37.5% C 0.120 H 266.2°. Best body text is #FFFFFF at 10.45:1 contrast (WCAG AA passes).

Color values

HEX	#233B80
RGB	rgb(35, 59, 128)
HSL	hsl(225, 57%, 32%)
HSV	hsv(225, 73%, 50%)
CMYK	cmyk(72.7%, 53.9%, 0%, 49.8%)
CIE-LAB	lab(26.86, 16.02, -41.78)
CIE-LCH	lch(26.86, 44.75, 290.98°)
OKLab	oklab(37.53% -0.0079 -0.1201)
OKLCH	oklch(37.53% 0.12 266.2)
XYZ	xyz(6.1520, 5.0431, 21.0671)
Luminance	0.0504 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233B80 #806823

analogous

#236A80 #233B80 #3A2380

triadic

#233B80 #80233B #3B8023

tetradic

#233B80 #80236A #806823 #23803A

square

#233B80 #80236A #806823 #23803A

split-complementary

#233B80 #803A23 #6A8023

monochromatic

#090F20 #162550 #233B80 #3051B0 #4F70CF

Accessibility & contrast

On white

10.45

#233B80 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.01

#233B80 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233B80

10.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233B80	#FFFFFF	#000000	##FFFFFF
##233B80	1.00	10.45	2.01	10.45
#FFFFFF	10.45	1.00	21.00	1.00
#000000	2.01	21.00	1.00	21.00
##FFFFFF	10.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0E4482

Deuteranopia (green-blind)

#003B7F

Tritanopia (blue-blind)

#004B57

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #233b80;
/* rgb */ color: rgb(35, 59, 128);
/* oklch */ color: oklch(37.5% 0.120 266.2);

Tailwind

colors: {
  custom: {
    50: '#6b70a5',
    500: '#233b80',
    950: '#000000',
  },
}

SCSS

$custom: #233b80;
$custom-light: #6b70a5;
$custom-dark: #000000;

JSON

{
  "hex": "#233b80",
  "rgb": {
    "r": 35,
    "g": 59,
    "b": 128
  },
  "hsl": {
    "h": 224.516,
    "s": 57.055,
    "l": 31.961
  },
  "oklch": {
    "l": 0.37525,
    "c": 0.12037,
    "h": 266.2
  },
  "luminance": 0.05044
}

Semantic roles & 50–950 ramp

primary

#233B80

secondary

#B2984D

accent

#B947E0

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #233B80

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

Preview Lab → · Contrast checker → · Palette generator →