#233CA8#233CA8

#233CA8 is a dark, vivid blue. Relative luminance 0.064; OKLCH L 41.2% C 0.175 H 267.6°. Best body text is #FFFFFF at 9.20:1 contrast (WCAG AA passes).

Color values

HEX	#233CA8
RGB	rgb(35, 60, 168)
HSL	hsl(229, 66%, 40%)
HSV	hsv(229, 79%, 66%)
CMYK	cmyk(79.2%, 64.3%, 0%, 34.1%)
CIE-LAB	lab(30.44, 30.86, -60.48)
CIE-LCH	lch(30.44, 67.90, 297.03°)
OKLab	oklab(41.23% -0.0075 -0.175)
OKLCH	oklch(41.23% 0.175 267.6)
XYZ	xyz(9.3744, 6.4151, 37.7824)
Luminance	0.0642 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233CA8 #A88F23

analogous

#237EA8 #233CA8 #4D23A8

triadic

#233CA8 #A8233C #3CA823

tetradic

#233CA8 #A8237E #A88F23 #23A84D

square

#233CA8 #A8237E #A88F23 #23A84D

split-complementary

#233CA8 #A84D23 #7EA823

monochromatic

#0E1843 #182A75 #233CA8 #3452D5 #667DDF

Accessibility & contrast

On white

9.20

#233CA8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.28

#233CA8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233CA8

9.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233CA8	#FFFFFF	#000000	##FFFFFF
##233CA8	1.00	9.20	2.28	9.20
#FFFFFF	9.20	1.00	21.00	1.00
#000000	2.28	21.00	1.00	21.00
##FFFFFF	9.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EAB

Deuteranopia (green-blind)

#0041A6

Tritanopia (blue-blind)

#00586C

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #233ca8;
/* rgb */ color: rgb(35, 60, 168);
/* oklch */ color: oklch(41.2% 0.175 267.6);

Tailwind

colors: {
  custom: {
    50: '#7571c3',
    500: '#233ca8',
    950: '#000000',
  },
}

SCSS

$custom: #233ca8;
$custom-light: #7571c3;
$custom-dark: #000000;

JSON

{
  "hex": "#233ca8",
  "rgb": {
    "r": 35,
    "g": 60,
    "b": 168
  },
  "hsl": {
    "h": 228.722,
    "s": 65.517,
    "l": 39.804
  },
  "oklch": {
    "l": 0.41231,
    "c": 0.17515,
    "h": 267.6
  },
  "luminance": 0.06416
}

Semantic roles & 50–950 ramp

primary

#233CA8

secondary

#C5B262

accent

#C93FE8

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #233CA8

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

Preview Lab → · Contrast checker → · Palette generator →