#233D8A#233D8A

#233D8A is a dark, vivid blue. Relative luminance 0.055; OKLCH L 38.8% C 0.132 H 266.2°. Best body text is #FFFFFF at 9.97:1 contrast (WCAG AA passes).

Color values

HEX	#233D8A
RGB	rgb(35, 61, 138)
HSL	hsl(225, 60%, 34%)
HSV	hsv(225, 75%, 54%)
CMYK	cmyk(74.6%, 55.8%, 0%, 45.9%)
CIE-LAB	lab(28.19, 18.58, -45.85)
CIE-LCH	lch(28.19, 49.47, 292.06°)
OKLab	oklab(38.78% -0.0088 -0.132)
OKLCH	oklch(38.78% 0.132 266.2)
XYZ	xyz(6.9477, 5.5291, 24.7409)
Luminance	0.0553 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233D8A #8A7023

analogous

#23718A #233D8A #3C238A

triadic

#233D8A #8A233D #3D8A23

tetradic

#233D8A #8A2371 #8A7023 #238A3C

square

#233D8A #8A2371 #8A7023 #238A3C

split-complementary

#233D8A #8A3C23 #718A23

monochromatic

#0A1228 #172759 #233D8A #2F53BB #5474D4

Accessibility & contrast

On white

9.97

#233D8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.11

#233D8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233D8A

9.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233D8A	#FFFFFF	#000000	##FFFFFF
##233D8A	1.00	9.97	2.11	9.97
#FFFFFF	9.97	1.00	21.00	1.00
#000000	2.11	21.00	1.00	21.00
##FFFFFF	9.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00478D

Deuteranopia (green-blind)

#003E88

Tritanopia (blue-blind)

#00505D

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #233d8a;
/* rgb */ color: rgb(35, 61, 138);
/* oklch */ color: oklch(38.8% 0.132 266.2);

Tailwind

colors: {
  custom: {
    50: '#6d72ad',
    500: '#233d8a',
    950: '#000000',
  },
}

SCSS

$custom: #233d8a;
$custom-light: #6d72ad;
$custom-dark: #000000;

JSON

{
  "hex": "#233d8a",
  "rgb": {
    "r": 35,
    "g": 61,
    "b": 138
  },
  "hsl": {
    "h": 224.854,
    "s": 59.538,
    "l": 33.922
  },
  "oklch": {
    "l": 0.38775,
    "c": 0.13233,
    "h": 266.2
  },
  "luminance": 0.0553
}

Semantic roles & 50–950 ramp

primary

#233D8A

secondary

#B79E51

accent

#BB45E3

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #233D8A

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

Preview Lab → · Contrast checker → · Palette generator →