#233D74#233D74

#233D74 is a dark, moderate blue. Relative luminance 0.050; OKLCH L 37.1% C 0.100 H 263.3°. Best body text is #FFFFFF at 10.55:1 contrast (WCAG AA passes).

Color values

HEX	#233D74
RGB	rgb(35, 61, 116)
HSL	hsl(221, 54%, 30%)
HSV	hsv(221, 70%, 45%)
CMYK	cmyk(69.8%, 47.4%, 0%, 54.5%)
CIE-LAB	lab(26.61, 9.90, -34.62)
CIE-LCH	lch(26.61, 36.01, 285.96°)
OKLab	oklab(37.06% -0.0116 -0.099)
OKLCH	oklch(37.06% 0.1 263.3)
XYZ	xyz(5.5132, 4.9552, 17.1855)
Luminance	0.0496 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233D74 #745A23

analogous

#236674 #233D74 #322374

triadic

#233D74 #74233D #3D7423

tetradic

#233D74 #742366 #745A23 #237432

square

#233D74 #742366 #745A23 #237432

split-complementary

#233D74 #743223 #667423

monochromatic

#070C18 #152445 #233D74 #3156A3 #4972C8

Accessibility & contrast

On white

10.55

#233D74 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.99

#233D74 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233D74

10.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233D74	#FFFFFF	#000000	##FFFFFF
##233D74	1.00	10.55	1.99	10.55
#FFFFFF	10.55	1.00	21.00	1.00
#000000	1.99	21.00	1.00	21.00
##FFFFFF	10.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#224376

Deuteranopia (green-blind)

#133B73

Tritanopia (blue-blind)

#004A52

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #233d74;
/* rgb */ color: rgb(35, 61, 116);
/* oklch */ color: oklch(37.1% 0.100 263.3);

Tailwind

colors: {
  custom: {
    50: '#68729c',
    500: '#233d74',
    950: '#000000',
  },
}

SCSS

$custom: #233d74;
$custom-light: #68729c;
$custom-dark: #000000;

JSON

{
  "hex": "#233d74",
  "rgb": {
    "r": 35,
    "g": 61,
    "b": 116
  },
  "hsl": {
    "h": 220.741,
    "s": 53.642,
    "l": 29.608
  },
  "oklch": {
    "l": 0.37062,
    "c": 0.0997,
    "h": 263.3
  },
  "luminance": 0.04956
}

Semantic roles & 50–950 ramp

primary

#233D74

secondary

#A78A4C

accent

#AE4BDD

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#07070E

muted

#7A7A7E

Preview Lab

Preview with #233D74

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

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