#233B74#233B74

#233B74 is a dark, moderate blue. Relative luminance 0.047; OKLCH L 36.6% C 0.102 H 264.7°. Best body text is #FFFFFF at 10.77:1 contrast (WCAG AA passes).

Color values

HEX	#233B74
RGB	rgb(35, 59, 116)
HSL	hsl(222, 54%, 30%)
HSV	hsv(222, 70%, 45%)
CMYK	cmyk(69.8%, 49.1%, 0%, 54.5%)
CIE-LAB	lab(26.00, 11.29, -35.60)
CIE-LCH	lch(26.00, 37.35, 287.60°)
OKLab	oklab(36.6% -0.0095 -0.1019)
OKLCH	oklch(36.6% 0.102 264.7)
XYZ	xyz(5.4084, 4.7457, 17.1506)
Luminance	0.0475 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233B74 #745C23

analogous

#236474 #233B74 #342374

triadic

#233B74 #74233B #3B7423

tetradic

#233B74 #742364 #745C23 #237434

square

#233B74 #742364 #745C23 #237434

split-complementary

#233B74 #743423 #647423

monochromatic

#070C18 #152345 #233B74 #3153A3 #496FC8

Accessibility & contrast

On white

10.77

#233B74 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.95

#233B74 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233B74

10.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233B74	#FFFFFF	#000000	##FFFFFF
##233B74	1.00	10.77	1.95	10.77
#FFFFFF	10.77	1.00	21.00	1.00
#000000	1.95	21.00	1.00	21.00
##FFFFFF	10.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E4176

Deuteranopia (green-blind)

#0D3A73

Tritanopia (blue-blind)

#004852

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #233b74;
/* rgb */ color: rgb(35, 59, 116);
/* oklch */ color: oklch(36.6% 0.102 264.7);

Tailwind

colors: {
  custom: {
    50: '#68709c',
    500: '#233b74',
    950: '#000000',
  },
}

SCSS

$custom: #233b74;
$custom-light: #68709c;
$custom-dark: #000000;

JSON

{
  "hex": "#233b74",
  "rgb": {
    "r": 35,
    "g": 59,
    "b": 116
  },
  "hsl": {
    "h": 222.222,
    "s": 53.642,
    "l": 29.608
  },
  "oklch": {
    "l": 0.36595,
    "c": 0.10236,
    "h": 264.7
  },
  "luminance": 0.04746
}

Semantic roles & 50–950 ramp

primary

#233B74

secondary

#A78C4C

accent

#B24BDD

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#07070E

muted

#7A7A7E

Preview Lab

Preview with #233B74

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

Preview Lab → · Contrast checker → · Palette generator →