#233D79#233D79

#233D79 is a dark, moderate blue. Relative luminance 0.051; OKLCH L 37.4% C 0.107 H 264.2°. Best body text is #FFFFFF at 10.42:1 contrast (WCAG AA passes).

Color values

HEX	#233D79
RGB	rgb(35, 61, 121)
HSL	hsl(222, 55%, 31%)
HSV	hsv(222, 71%, 47%)
CMYK	cmyk(71.1%, 49.6%, 0%, 52.5%)
CIE-LAB	lab(26.95, 11.87, -37.24)
CIE-LCH	lch(26.95, 39.09, 287.68°)
OKLab	oklab(37.43% -0.0107 -0.1067)
OKLCH	oklch(37.43% 0.107 264.2)
XYZ	xyz(5.8119, 5.0747, 18.7587)
Luminance	0.0508 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233D79 #795F23

analogous

#236879 #233D79 #342379

triadic

#233D79 #79233D #3D7923

tetradic

#233D79 #792368 #795F23 #237934

square

#233D79 #792368 #795F23 #237934

split-complementary

#233D79 #793423 #687923

monochromatic

#080D1A #15254A #233D79 #3155A8 #4B72CB

Accessibility & contrast

On white

10.42

#233D79 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.02

#233D79 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233D79

10.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233D79	#FFFFFF	#000000	##FFFFFF
##233D79	1.00	10.42	2.02	10.42
#FFFFFF	10.42	1.00	21.00	1.00
#000000	2.02	21.00	1.00	21.00
##FFFFFF	10.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1D447B

Deuteranopia (green-blind)

#093C78

Tritanopia (blue-blind)

#004B55

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #233d79;
/* rgb */ color: rgb(35, 61, 121);
/* oklch */ color: oklch(37.4% 0.107 264.2);

Tailwind

colors: {
  custom: {
    50: '#6972a0',
    500: '#233d79',
    950: '#000000',
  },
}

SCSS

$custom: #233d79;
$custom-light: #6972a0;
$custom-dark: #000000;

JSON

{
  "hex": "#233d79",
  "rgb": {
    "r": 35,
    "g": 61,
    "b": 121
  },
  "hsl": {
    "h": 221.86,
    "s": 55.128,
    "l": 30.588
  },
  "oklch": {
    "l": 0.37432,
    "c": 0.10725,
    "h": 264.2
  },
  "luminance": 0.05075
}

Semantic roles & 50–950 ramp

primary

#233D79

secondary

#AC8F4C

accent

#B149DE

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#07070F

muted

#7A7A7E

Preview Lab

Preview with #233D79

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

Preview Lab → · Contrast checker → · Palette generator →