#233EB1#233EB1

#233EB1 is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.4% C 0.185 H 267.2°. Best body text is #FFFFFF at 8.77:1 contrast (WCAG AA passes).

Color values

HEX	#233EB1
RGB	rgb(35, 62, 177)
HSL	hsl(229, 67%, 42%)
HSV	hsv(229, 80%, 69%)
CMYK	cmyk(80.2%, 65%, 0%, 30.6%)
CIE-LAB	lab(31.75, 32.93, -63.70)
CIE-LCH	lch(31.75, 71.71, 297.34°)
OKLab	oklab(42.45% -0.0089 -0.1844)
OKLCH	oklch(42.45% 0.185 267.2)
XYZ	xyz(10.3488, 6.9757, 42.3875)
Luminance	0.0698 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233EB1 #B19623

analogous

#2385B1 #233EB1 #4F23B1

triadic

#233EB1 #B1233E #3EB123

tetradic

#233EB1 #B12385 #B19623 #23B14F

square

#233EB1 #B12385 #B19623 #23B14F

split-complementary

#233EB1 #B14F23 #85B123

monochromatic

#0F1A4B #192C7E #233EB1 #3957D8 #6C83E2

Accessibility & contrast

On white

8.77

#233EB1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.40

#233EB1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233EB1

8.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233EB1	#FFFFFF	#000000	##FFFFFF
##233EB1	1.00	8.77	2.40	8.77
#FFFFFF	8.77	1.00	21.00	1.00
#000000	2.40	21.00	1.00	21.00
##FFFFFF	8.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052B5

Deuteranopia (green-blind)

#0044AF

Tritanopia (blue-blind)

#005D72

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #233eb1;
/* rgb */ color: rgb(35, 62, 177);
/* oklch */ color: oklch(42.4% 0.185 267.2);

Tailwind

colors: {
  custom: {
    50: '#7773c9',
    500: '#233eb1',
    950: '#000000',
  },
}

SCSS

$custom: #233eb1;
$custom-light: #7773c9;
$custom-dark: #000000;

JSON

{
  "hex": "#233eb1",
  "rgb": {
    "r": 35,
    "g": 62,
    "b": 177
  },
  "hsl": {
    "h": 228.592,
    "s": 66.981,
    "l": 41.569
  },
  "oklch": {
    "l": 0.42449,
    "c": 0.18462,
    "h": 267.2
  },
  "luminance": 0.06977
}

Semantic roles & 50–950 ramp

primary

#233EB1

secondary

#C8B668

accent

#C93EEA

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #233EB1

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

Preview Lab → · Contrast checker → · Palette generator →