#233B72#233B72

#233B72 is a dark, moderate blue. Relative luminance 0.047; OKLCH L 36.4% C 0.099 H 264.3°. Best body text is #FFFFFF at 10.82:1 contrast (WCAG AA passes).

Color values

HEX	#233B72
RGB	rgb(35, 59, 114)
HSL	hsl(222, 53%, 29%)
HSV	hsv(222, 69%, 45%)
CMYK	cmyk(69.3%, 48.2%, 0%, 55.3%)
CIE-LAB	lab(25.86, 10.50, -34.55)
CIE-LCH	lch(25.86, 36.11, 286.91°)
OKLab	oklab(36.45% -0.0098 -0.0988)
OKLCH	oklch(36.45% 0.099 264.3)
XYZ	xyz(5.2933, 4.6997, 16.5445)
Luminance	0.0470 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233B72 #725A23

analogous

#236372 #233B72 #332372

triadic

#233B72 #72233B #3B7223

tetradic

#233B72 #722363 #725A23 #237233

square

#233B72 #722363 #725A23 #237233

split-complementary

#233B72 #723323 #637223

monochromatic

#070C17 #152343 #233B72 #3153A1 #486FC7

Accessibility & contrast

On white

10.82

#233B72 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#233B72 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233B72

10.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233B72	#FFFFFF	#000000	##FFFFFF
##233B72	1.00	10.82	1.94	10.82
#FFFFFF	10.82	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#204174

Deuteranopia (green-blind)

#113A71

Tritanopia (blue-blind)

#004851

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #233b72;
/* rgb */ color: rgb(35, 59, 114);
/* oklch */ color: oklch(36.4% 0.099 264.3);

Tailwind

colors: {
  custom: {
    50: '#68709b',
    500: '#233b72',
    950: '#000000',
  },
}

SCSS

$custom: #233b72;
$custom-light: #68709b;
$custom-dark: #000000;

JSON

{
  "hex": "#233b72",
  "rgb": {
    "r": 35,
    "g": 59,
    "b": 114
  },
  "hsl": {
    "h": 221.772,
    "s": 53.02,
    "l": 29.216
  },
  "oklch": {
    "l": 0.36447,
    "c": 0.09932,
    "h": 264.3
  },
  "luminance": 0.047
}

Semantic roles & 50–950 ramp

primary

#233B72

secondary

#A58A4C

accent

#B04BDC

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#07070E

muted

#7A7A7E

Preview Lab

Preview with #233B72

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

Preview Lab → · Contrast checker → · Palette generator →