#233CA9#233CA9

#233CA9 is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.3% C 0.176 H 267.6°. Best body text is #FFFFFF at 9.17:1 contrast (WCAG AA passes).

Color values

HEX	#233CA9
RGB	rgb(35, 60, 169)
HSL	hsl(229, 66%, 40%)
HSV	hsv(229, 79%, 66%)
CMYK	cmyk(79.3%, 64.5%, 0%, 33.7%)
CIE-LAB	lab(30.53, 31.23, -60.93)
CIE-LCH	lch(30.53, 68.47, 297.14°)
OKLab	oklab(41.33% -0.0075 -0.1763)
OKLCH	oklch(41.33% 0.176 267.6)
XYZ	xyz(9.4679, 6.4525, 38.2749)
Luminance	0.0645 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233CA9 #A99023

analogous

#237FA9 #233CA9 #4D23A9

triadic

#233CA9 #A9233C #3CA923

tetradic

#233CA9 #A9237F #A99023 #23A94D

square

#233CA9 #A9237F #A99023 #23A94D

split-complementary

#233CA9 #A94D23 #7FA923

monochromatic

#0E1844 #192A76 #233CA9 #3452D5 #677DDF

Accessibility & contrast

On white

9.17

#233CA9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.29

#233CA9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233CA9

9.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233CA9	#FFFFFF	#000000	##FFFFFF
##233CA9	1.00	9.17	2.29	9.17
#FFFFFF	9.17	1.00	21.00	1.00
#000000	2.29	21.00	1.00	21.00
##FFFFFF	9.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EAC

Deuteranopia (green-blind)

#0042A7

Tritanopia (blue-blind)

#00596D

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #233ca9;
/* rgb */ color: rgb(35, 60, 169);
/* oklch */ color: oklch(41.3% 0.176 267.6);

Tailwind

colors: {
  custom: {
    50: '#7571c4',
    500: '#233ca9',
    950: '#000000',
  },
}

SCSS

$custom: #233ca9;
$custom-light: #7571c4;
$custom-dark: #000000;

JSON

{
  "hex": "#233ca9",
  "rgb": {
    "r": 35,
    "g": 60,
    "b": 169
  },
  "hsl": {
    "h": 228.806,
    "s": 65.686,
    "l": 40
  },
  "oklch": {
    "l": 0.41325,
    "c": 0.17648,
    "h": 267.6
  },
  "luminance": 0.06454
}

Semantic roles & 50–950 ramp

primary

#233CA9

secondary

#C5B363

accent

#C93FE9

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #233CA9

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

Preview Lab → · Contrast checker → · Palette generator →