#233B78#233B78

#233B78 is a dark, moderate blue. Relative luminance 0.048; OKLCH L 36.9% C 0.108 H 265.3°. Best body text is #FFFFFF at 10.67:1 contrast (WCAG AA passes).

Color values

HEX	#233B78
RGB	rgb(35, 59, 120)
HSL	hsl(223, 55%, 30%)
HSV	hsv(223, 71%, 47%)
CMYK	cmyk(70.8%, 50.8%, 0%, 52.9%)
CIE-LAB	lab(26.28, 12.87, -37.69)
CIE-LCH	lch(26.28, 39.82, 288.85°)
OKLab	oklab(36.9% -0.0089 -0.1081)
OKLCH	oklch(36.9% 0.108 265.3)
XYZ	xyz(5.6461, 4.8408, 18.4025)
Luminance	0.0484 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233B78 #786023

analogous

#236578 #233B78 #352378

triadic

#233B78 #78233B #3B7823

tetradic

#233B78 #782365 #786023 #237835

square

#233B78 #782365 #786023 #237835

split-complementary

#233B78 #783523 #657823

monochromatic

#070C19 #152449 #233B78 #3152A7 #4B6FCA

Accessibility & contrast

On white

10.67

#233B78 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.97

#233B78 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233B78

10.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233B78	#FFFFFF	#000000	##FFFFFF
##233B78	1.00	10.67	1.97	10.67
#FFFFFF	10.67	1.00	21.00	1.00
#000000	1.97	21.00	1.00	21.00
##FFFFFF	10.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A427A

Deuteranopia (green-blind)

#033B77

Tritanopia (blue-blind)

#004953

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #233b78;
/* rgb */ color: rgb(35, 59, 120);
/* oklch */ color: oklch(36.9% 0.108 265.3);

Tailwind

colors: {
  custom: {
    50: '#69709f',
    500: '#233b78',
    950: '#000000',
  },
}

SCSS

$custom: #233b78;
$custom-light: #69709f;
$custom-dark: #000000;

JSON

{
  "hex": "#233b78",
  "rgb": {
    "r": 35,
    "g": 59,
    "b": 120
  },
  "hsl": {
    "h": 223.059,
    "s": 54.839,
    "l": 30.392
  },
  "oklch": {
    "l": 0.36898,
    "c": 0.10843,
    "h": 265.3
  },
  "luminance": 0.04841
}

Semantic roles & 50–950 ramp

primary

#233B78

secondary

#AB904C

accent

#B44ADE

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#07070E

muted

#7A7A7E

Preview Lab

Preview with #233B78

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

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