#233D78#233D78

#233D78 is a dark, moderate blue. Relative luminance 0.051; OKLCH L 37.4% C 0.106 H 264.1°. Best body text is #FFFFFF at 10.45:1 contrast (WCAG AA passes).

Color values

HEX	#233D78
RGB	rgb(35, 61, 120)
HSL	hsl(222, 55%, 30%)
HSV	hsv(222, 71%, 47%)
CMYK	cmyk(70.8%, 49.2%, 0%, 52.9%)
CIE-LAB	lab(26.88, 11.47, -36.72)
CIE-LCH	lch(26.88, 38.47, 287.35°)
OKLab	oklab(37.36% -0.0109 -0.1052)
OKLCH	oklch(37.36% 0.106 264.1)
XYZ	xyz(5.7509, 5.0503, 18.4374)
Luminance	0.0505 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233D78 #785E23

analogous

#236778 #233D78 #332378

triadic

#233D78 #78233D #3D7823

tetradic

#233D78 #782367 #785E23 #237833

square

#233D78 #782367 #785E23 #237833

split-complementary

#233D78 #783323 #677823

monochromatic

#070D19 #152549 #233D78 #3155A7 #4B72CA

Accessibility & contrast

On white

10.45

#233D78 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.01

#233D78 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233D78

10.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233D78	#FFFFFF	#000000	##FFFFFF
##233D78	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)

#1E447A

Deuteranopia (green-blind)

#0C3C77

Tritanopia (blue-blind)

#004B54

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #233d78;
/* rgb */ color: rgb(35, 61, 120);
/* oklch */ color: oklch(37.4% 0.106 264.1);

Tailwind

colors: {
  custom: {
    50: '#69729f',
    500: '#233d78',
    950: '#000000',
  },
}

SCSS

$custom: #233d78;
$custom-light: #69729f;
$custom-dark: #000000;

JSON

{
  "hex": "#233d78",
  "rgb": {
    "r": 35,
    "g": 61,
    "b": 120
  },
  "hsl": {
    "h": 221.647,
    "s": 54.839,
    "l": 30.392
  },
  "oklch": {
    "l": 0.37357,
    "c": 0.10574,
    "h": 264.1
  },
  "luminance": 0.05051
}

Semantic roles & 50–950 ramp

primary

#233D78

secondary

#AB8E4C

accent

#B14ADE

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#07070E

muted

#7A7A7E

Preview Lab

Preview with #233D78

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

Preview Lab → · Contrast checker → · Palette generator →