#233CB0#233CB0

#233CB0 is a dark, vivid blue. Relative luminance 0.067; OKLCH L 42.0% C 0.186 H 267.6°. Best body text is #FFFFFF at 8.96:1 contrast (WCAG AA passes).

Color values

HEX	#233CB0
RGB	rgb(35, 60, 176)
HSL	hsl(229, 67%, 41%)
HSV	hsv(229, 80%, 69%)
CMYK	cmyk(80.1%, 65.9%, 0%, 31%)
CIE-LAB	lab(31.17, 33.86, -64.07)
CIE-LCH	lch(31.17, 72.46, 297.85°)
OKLab	oklab(41.99% -0.0078 -0.1855)
OKLCH	oklch(41.99% 0.186 267.6)
XYZ	xyz(10.1427, 6.7225, 41.8289)
Luminance	0.0672 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233CB0 #B09723

analogous

#2383B0 #233CB0 #5123B0

triadic

#233CB0 #B0233C #3CB023

tetradic

#233CB0 #B02383 #B09723 #23B051

square

#233CB0 #B02383 #B09723 #23B051

split-complementary

#233CB0 #B05123 #83B023

monochromatic

#0F194A #192B7D #233CB0 #3955D8 #6C81E2

Accessibility & contrast

On white

8.96

#233CB0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.34

#233CB0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233CB0

8.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233CB0	#FFFFFF	#000000	##FFFFFF
##233CB0	1.00	8.96	2.34	8.96
#FFFFFF	8.96	1.00	21.00	1.00
#000000	2.34	21.00	1.00	21.00
##FFFFFF	8.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050B4

Deuteranopia (green-blind)

#0043AE

Tritanopia (blue-blind)

#005B70

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #233cb0;
/* rgb */ color: rgb(35, 60, 176);
/* oklch */ color: oklch(42.0% 0.186 267.6);

Tailwind

colors: {
  custom: {
    50: '#7771c9',
    500: '#233cb0',
    950: '#000000',
  },
}

SCSS

$custom: #233cb0;
$custom-light: #7771c9;
$custom-dark: #000000;

JSON

{
  "hex": "#233cb0",
  "rgb": {
    "r": 35,
    "g": 60,
    "b": 176
  },
  "hsl": {
    "h": 229.362,
    "s": 66.825,
    "l": 41.373
  },
  "oklch": {
    "l": 0.41991,
    "c": 0.18565,
    "h": 267.6
  },
  "luminance": 0.06724
}

Semantic roles & 50–950 ramp

primary

#233CB0

secondary

#C8B767

accent

#CB3EEA

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #233CB0

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

Preview Lab → · Contrast checker → · Palette generator →