#233BB0#233BB0

#233BB0 is a dark, vivid blue. Relative luminance 0.066; OKLCH L 41.8% C 0.187 H 267.8°. Best body text is #FFFFFF at 9.04:1 contrast (WCAG AA passes).

Color values

HEX	#233BB0
RGB	rgb(35, 59, 176)
HSL	hsl(230, 67%, 41%)
HSV	hsv(230, 80%, 69%)
CMYK	cmyk(80.1%, 66.5%, 0%, 31%)
CIE-LAB	lab(30.92, 34.50, -64.47)
CIE-LCH	lch(30.92, 73.12, 298.16°)
OKLab	oklab(41.81% -0.0073 -0.1867)
OKLCH	oklch(41.81% 0.187 267.8)
XYZ	xyz(10.0909, 6.6187, 41.8116)
Luminance	0.0662 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233BB0 #B09823

analogous

#2382B0 #233BB0 #5223B0

triadic

#233BB0 #B0233B #3BB023

tetradic

#233BB0 #B02382 #B09823 #23B052

square

#233BB0 #B02382 #B09823 #23B052

split-complementary

#233BB0 #B05223 #82B023

monochromatic

#0F194A #192A7D #233BB0 #3954D8 #6C80E2

Accessibility & contrast

On white

9.04

#233BB0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.32

#233BB0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233BB0

9.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233BB0	#FFFFFF	#000000	##FFFFFF
##233BB0	1.00	9.04	2.32	9.04
#FFFFFF	9.04	1.00	21.00	1.00
#000000	2.32	21.00	1.00	21.00
##FFFFFF	9.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050B4

Deuteranopia (green-blind)

#0042AE

Tritanopia (blue-blind)

#005B70

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #233bb0;
/* rgb */ color: rgb(35, 59, 176);
/* oklch */ color: oklch(41.8% 0.187 267.8);

Tailwind

colors: {
  custom: {
    50: '#7771c9',
    500: '#233bb0',
    950: '#000000',
  },
}

SCSS

$custom: #233bb0;
$custom-light: #7771c9;
$custom-dark: #000000;

JSON

{
  "hex": "#233bb0",
  "rgb": {
    "r": 35,
    "g": 59,
    "b": 176
  },
  "hsl": {
    "h": 229.787,
    "s": 66.825,
    "l": 41.373
  },
  "oklch": {
    "l": 0.41813,
    "c": 0.18681,
    "h": 267.8
  },
  "luminance": 0.0662
}

Semantic roles & 50–950 ramp

primary

#233BB0

secondary

#C8B767

accent

#CD3EEA

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #233BB0

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

Preview Lab → · Contrast checker → · Palette generator →