#233F81#233F81

#233F81 is a dark, moderate blue. Relative luminance 0.055; OKLCH L 38.5% C 0.117 H 264.3°. Best body text is #FFFFFF at 10.00:1 contrast (WCAG AA passes).

Color values

HEX	#233F81
RGB	rgb(35, 63, 129)
HSL	hsl(222, 57%, 32%)
HSV	hsv(222, 73%, 51%)
CMYK	cmyk(72.9%, 51.2%, 0%, 49.4%)
CIE-LAB	lab(28.11, 13.64, -40.40)
CIE-LCH	lch(28.11, 42.64, 288.66°)
OKLab	oklab(38.5% -0.0115 -0.116)
OKLCH	oklch(38.5% 0.117 264.3)
XYZ	xyz(6.4317, 5.4967, 21.4866)
Luminance	0.0550 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233F81 #816523

analogous

#236E81 #233F81 #362381

triadic

#233F81 #81233F #3F8123

tetradic

#233F81 #81236E #816523 #238136

square

#233F81 #81236E #816523 #238136

split-complementary

#233F81 #813623 #6E8123

monochromatic

#091021 #162751 #233F81 #3057B1 #4F75CF

Accessibility & contrast

On white

10.00

#233F81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.10

#233F81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233F81

10.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233F81	#FFFFFF	#000000	##FFFFFF
##233F81	1.00	10.00	2.10	10.00
#FFFFFF	10.00	1.00	21.00	1.00
#000000	2.10	21.00	1.00	21.00
##FFFFFF	10.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#194783

Deuteranopia (green-blind)

#003E80

Tritanopia (blue-blind)

#004F5A

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #233f81;
/* rgb */ color: rgb(35, 63, 129);
/* oklch */ color: oklch(38.5% 0.117 264.3);

Tailwind

colors: {
  custom: {
    50: '#6b73a6',
    500: '#233f81',
    950: '#000000',
  },
}

SCSS

$custom: #233f81;
$custom-light: #6b73a6;
$custom-dark: #000000;

JSON

{
  "hex": "#233f81",
  "rgb": {
    "r": 35,
    "g": 63,
    "b": 129
  },
  "hsl": {
    "h": 222.128,
    "s": 57.317,
    "l": 32.157
  },
  "oklch": {
    "l": 0.38497,
    "c": 0.11653,
    "h": 264.3
  },
  "luminance": 0.05497
}

Semantic roles & 50–950 ramp

primary

#233F81

secondary

#B3954D

accent

#B347E1

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #233F81

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

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