#233AB1#233AB1

#233AB1 is a dark, vivid blue. Relative luminance 0.066; OKLCH L 41.7% C 0.189 H 267.9°. Best body text is #FFFFFF at 9.08:1 contrast (WCAG AA passes).

Color values

HEX	#233AB1
RGB	rgb(35, 58, 177)
HSL	hsl(230, 67%, 42%)
HSV	hsv(230, 80%, 69%)
CMYK	cmyk(80.2%, 67.2%, 0%, 30.6%)
CIE-LAB	lab(30.78, 35.52, -65.31)
CIE-LCH	lch(30.78, 74.34, 298.54°)
OKLab	oklab(41.73% -0.0068 -0.1891)
OKLCH	oklch(41.73% 0.189 267.9)
XYZ	xyz(10.1393, 6.5566, 42.3176)
Luminance	0.0656 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233AB1 #B19A23

analogous

#2381B1 #233AB1 #5323B1

triadic

#233AB1 #B1233A #3AB123

tetradic

#233AB1 #B12381 #B19A23 #23B153

square

#233AB1 #B12381 #B19A23 #23B153

split-complementary

#233AB1 #B15323 #81B123

monochromatic

#0F194B #19297E #233AB1 #3953D8 #6C7FE2

Accessibility & contrast

On white

9.08

#233AB1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.31

#233AB1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233AB1

9.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233AB1	#FFFFFF	#000000	##FFFFFF
##233AB1	1.00	9.08	2.31	9.08
#FFFFFF	9.08	1.00	21.00	1.00
#000000	2.31	21.00	1.00	21.00
##FFFFFF	9.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FB5

Deuteranopia (green-blind)

#0042AF

Tritanopia (blue-blind)

#005A70

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #233ab1;
/* rgb */ color: rgb(35, 58, 177);
/* oklch */ color: oklch(41.7% 0.189 267.9);

Tailwind

colors: {
  custom: {
    50: '#7770c9',
    500: '#233ab1',
    950: '#000000',
  },
}

SCSS

$custom: #233ab1;
$custom-light: #7770c9;
$custom-dark: #000000;

JSON

{
  "hex": "#233ab1",
  "rgb": {
    "r": 35,
    "g": 58,
    "b": 177
  },
  "hsl": {
    "h": 230.282,
    "s": 66.981,
    "l": 41.569
  },
  "oklch": {
    "l": 0.41734,
    "c": 0.18924,
    "h": 267.9
  },
  "luminance": 0.06558
}

Semantic roles & 50–950 ramp

primary

#233AB1

secondary

#C8B968

accent

#CE3EEA

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #233AB1

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

Preview Lab → · Contrast checker → · Palette generator →