#233C79#233C79

#233C79 is a dark, moderate blue. Relative luminance 0.050; OKLCH L 37.2% C 0.109 H 264.8°. Best body text is #FFFFFF at 10.53:1 contrast (WCAG AA passes).

Color values

HEX	#233C79
RGB	rgb(35, 60, 121)
HSL	hsl(223, 55%, 31%)
HSV	hsv(223, 71%, 47%)
CMYK	cmyk(71.1%, 50.4%, 0%, 52.5%)
CIE-LAB	lab(26.65, 12.57, -37.72)
CIE-LCH	lch(26.65, 39.76, 288.42°)
OKLab	oklab(37.2% -0.0097 -0.1081)
OKLCH	oklch(37.2% 0.109 264.8)
XYZ	xyz(5.7590, 4.9689, 18.7411)
Luminance	0.0497 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233C79 #796023

analogous

#236779 #233C79 #352379

triadic

#233C79 #79233C #3C7923

tetradic

#233C79 #792367 #796023 #237935

square

#233C79 #792367 #796023 #237935

split-complementary

#233C79 #793523 #677923

monochromatic

#080D1A #15244A #233C79 #3154A8 #4B70CB

Accessibility & contrast

On white

10.53

#233C79 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.99

#233C79 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233C79

10.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233C79	#FFFFFF	#000000	##FFFFFF
##233C79	1.00	10.53	1.99	10.53
#FFFFFF	10.53	1.00	21.00	1.00
#000000	1.99	21.00	1.00	21.00
##FFFFFF	10.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B437B

Deuteranopia (green-blind)

#053B78

Tritanopia (blue-blind)

#004A54

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #233c79;
/* rgb */ color: rgb(35, 60, 121);
/* oklch */ color: oklch(37.2% 0.109 264.8);

Tailwind

colors: {
  custom: {
    50: '#6971a0',
    500: '#233c79',
    950: '#000000',
  },
}

SCSS

$custom: #233c79;
$custom-light: #6971a0;
$custom-dark: #000000;

JSON

{
  "hex": "#233c79",
  "rgb": {
    "r": 35,
    "g": 60,
    "b": 121
  },
  "hsl": {
    "h": 222.558,
    "s": 55.128,
    "l": 30.588
  },
  "oklch": {
    "l": 0.37202,
    "c": 0.10859,
    "h": 264.8
  },
  "luminance": 0.0497
}

Semantic roles & 50–950 ramp

primary

#233C79

secondary

#AC904C

accent

#B349DE

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#07070F

muted

#7A7A7E

Preview Lab

Preview with #233C79

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

Preview Lab → · Contrast checker → · Palette generator →