#233C8A#233C8A

#233C8A is a dark, vivid blue. Relative luminance 0.054; OKLCH L 38.6% C 0.134 H 266.6°. Best body text is #FFFFFF at 10.07:1 contrast (WCAG AA passes).

Color values

HEX	#233C8A
RGB	rgb(35, 60, 138)
HSL	hsl(225, 60%, 34%)
HSV	hsv(225, 75%, 54%)
CMYK	cmyk(74.6%, 56.5%, 0%, 45.9%)
CIE-LAB	lab(27.91, 19.27, -46.31)
CIE-LCH	lch(27.91, 50.16, 292.59°)
OKLab	oklab(38.56% -0.0079 -0.1334)
OKLCH	oklch(38.56% 0.134 266.6)
XYZ	xyz(6.8948, 5.4233, 24.7233)
Luminance	0.0542 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233C8A #8A7123

analogous

#23708A #233C8A #3E238A

triadic

#233C8A #8A233C #3C8A23

tetradic

#233C8A #8A2370 #8A7123 #238A3E

square

#233C8A #8A2370 #8A7123 #238A3E

split-complementary

#233C8A #8A3E23 #708A23

monochromatic

#0A1228 #172759 #233C8A #2F51BB #5473D4

Accessibility & contrast

On white

10.07

#233C8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#233C8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233C8A

10.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233C8A	#FFFFFF	#000000	##FFFFFF
##233C8A	1.00	10.07	2.08	10.07
#FFFFFF	10.07	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00478D

Deuteranopia (green-blind)

#003D88

Tritanopia (blue-blind)

#004F5D

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #233c8a;
/* rgb */ color: rgb(35, 60, 138);
/* oklch */ color: oklch(38.6% 0.134 266.6);

Tailwind

colors: {
  custom: {
    50: '#6d71ad',
    500: '#233c8a',
    950: '#000000',
  },
}

SCSS

$custom: #233c8a;
$custom-light: #6d71ad;
$custom-dark: #000000;

JSON

{
  "hex": "#233c8a",
  "rgb": {
    "r": 35,
    "g": 60,
    "b": 138
  },
  "hsl": {
    "h": 225.437,
    "s": 59.538,
    "l": 33.922
  },
  "oklch": {
    "l": 0.38561,
    "c": 0.13365,
    "h": 266.6
  },
  "luminance": 0.05424
}

Semantic roles & 50–950 ramp

primary

#233C8A

secondary

#B79F51

accent

#BC45E3

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #233C8A

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

Preview Lab → · Contrast checker → · Palette generator →