#233A78#233A78

#233A78 is a dark, moderate blue. Relative luminance 0.047; OKLCH L 36.7% C 0.110 H 265.9°. Best body text is #FFFFFF at 10.78:1 contrast (WCAG AA passes).

Color values

HEX	#233A78
RGB	rgb(35, 58, 120)
HSL	hsl(224, 55%, 30%)
HSV	hsv(224, 71%, 47%)
CMYK	cmyk(70.8%, 51.7%, 0%, 52.9%)
CIE-LAB	lab(25.98, 13.57, -38.17)
CIE-LCH	lch(25.98, 40.51, 289.57°)
OKLab	oklab(36.67% -0.0079 -0.1095)
OKLCH	oklch(36.67% 0.11 265.9)
XYZ	xyz(5.5952, 4.7390, 18.3855)
Luminance	0.0474 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233A78 #786123

analogous

#236478 #233A78 #372378

triadic

#233A78 #78233A #3A7823

tetradic

#233A78 #782364 #786123 #237837

square

#233A78 #782364 #786123 #237837

split-complementary

#233A78 #783723 #647823

monochromatic

#070C19 #152349 #233A78 #3151A7 #4B6DCA

Accessibility & contrast

On white

10.78

#233A78 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.95

#233A78 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233A78

10.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233A78	#FFFFFF	#000000	##FFFFFF
##233A78	1.00	10.78	1.95	10.78
#FFFFFF	10.78	1.00	21.00	1.00
#000000	1.95	21.00	1.00	21.00
##FFFFFF	10.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#17427A

Deuteranopia (green-blind)

#003A77

Tritanopia (blue-blind)

#004953

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #233a78;
/* rgb */ color: rgb(35, 58, 120);
/* oklch */ color: oklch(36.7% 0.110 265.9);

Tailwind

colors: {
  custom: {
    50: '#696f9f',
    500: '#233a78',
    950: '#000000',
  },
}

SCSS

$custom: #233a78;
$custom-light: #696f9f;
$custom-dark: #000000;

JSON

{
  "hex": "#233a78",
  "rgb": {
    "r": 35,
    "g": 58,
    "b": 120
  },
  "hsl": {
    "h": 223.765,
    "s": 54.839,
    "l": 30.392
  },
  "oklch": {
    "l": 0.3667,
    "c": 0.10977,
    "h": 265.9
  },
  "luminance": 0.0474
}

Semantic roles & 50–950 ramp

primary

#233A78

secondary

#AB914C

accent

#B64ADE

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#07070E

muted

#7A7A7E

Preview Lab

Preview with #233A78

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

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