#233C83#233C83

#233C83 is a dark, vivid blue. Relative luminance 0.052; OKLCH L 38.0% C 0.123 H 266.0°. Best body text is #FFFFFF at 10.27:1 contrast (WCAG AA passes).

Color values

HEX	#233C83
RGB	rgb(35, 60, 131)
HSL	hsl(224, 58%, 33%)
HSV	hsv(224, 73%, 51%)
CMYK	cmyk(73.3%, 54.2%, 0%, 48.6%)
CIE-LAB	lab(27.37, 16.51, -42.83)
CIE-LCH	lch(27.37, 45.90, 291.08°)
OKLab	oklab(37.99% -0.0085 -0.1232)
OKLCH	oklch(37.99% 0.123 266)
XYZ	xyz(6.4043, 5.2271, 22.1397)
Luminance	0.0523 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233C83 #836A23

analogous

#236C83 #233C83 #3A2383

triadic

#233C83 #83233C #3C8323

tetradic

#233C83 #83236C #836A23 #23833A

square

#233C83 #83236C #836A23 #23833A

split-complementary

#233C83 #833A23 #6C8323

monochromatic

#091022 #162653 #233C83 #3052B3 #5071D0

Accessibility & contrast

On white

10.27

#233C83 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.05

#233C83 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233C83

10.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233C83	#FFFFFF	#000000	##FFFFFF
##233C83	1.00	10.27	2.05	10.27
#FFFFFF	10.27	1.00	21.00	1.00
#000000	2.05	21.00	1.00	21.00
##FFFFFF	10.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0C4586

Deuteranopia (green-blind)

#003C82

Tritanopia (blue-blind)

#004D59

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #233c83;
/* rgb */ color: rgb(35, 60, 131);
/* oklch */ color: oklch(38.0% 0.123 266.0);

Tailwind

colors: {
  custom: {
    50: '#6b71a8',
    500: '#233c83',
    950: '#000000',
  },
}

SCSS

$custom: #233c83;
$custom-light: #6b71a8;
$custom-dark: #000000;

JSON

{
  "hex": "#233c83",
  "rgb": {
    "r": 35,
    "g": 60,
    "b": 131
  },
  "hsl": {
    "h": 224.375,
    "s": 57.831,
    "l": 32.549
  },
  "oklch": {
    "l": 0.37986,
    "c": 0.12347,
    "h": 266
  },
  "luminance": 0.05228
}

Semantic roles & 50–950 ramp

primary

#233C83

secondary

#B4994E

accent

#B947E1

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#08070F

muted

#7A7A7F

Preview Lab

Preview with #233C83

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

Preview Lab → · Contrast checker → · Palette generator →