#233B8E#233B8E

#233B8E is a dark, vivid blue. Relative luminance 0.054; OKLCH L 38.7% C 0.141 H 267.2°. Best body text is #FFFFFF at 10.06:1 contrast (WCAG AA passes).

Color values

HEX	#233B8E
RGB	rgb(35, 59, 142)
HSL	hsl(227, 60%, 35%)
HSV	hsv(227, 75%, 56%)
CMYK	cmyk(75.4%, 58.5%, 0%, 44.3%)
CIE-LAB	lab(27.95, 21.53, -48.72)
CIE-LCH	lch(27.95, 53.26, 293.84°)
OKLab	oklab(38.69% -0.0069 -0.1405)
OKLCH	oklch(38.69% 0.141 267.2)
XYZ	xyz(7.1379, 5.4375, 26.2593)
Luminance	0.0544 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233B8E #8E7623

analogous

#23718E #233B8E #41238E

triadic

#233B8E #8E233B #3B8E23

tetradic

#233B8E #8E2371 #8E7623 #238E41

square

#233B8E #8E2371 #8E7623 #238E41

split-complementary

#233B8E #8E4123 #718E23

monochromatic

#0B122C #17275D #233B8E #2F4FBF #5673D5

Accessibility & contrast

On white

10.06

#233B8E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#233B8E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233B8E

10.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233B8E	#FFFFFF	#000000	##FFFFFF
##233B8E	1.00	10.06	2.09	10.06
#FFFFFF	10.06	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004791

Deuteranopia (green-blind)

#003D8C

Tritanopia (blue-blind)

#00505E

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #233b8e;
/* rgb */ color: rgb(35, 59, 142);
/* oklch */ color: oklch(38.7% 0.141 267.2);

Tailwind

colors: {
  custom: {
    50: '#6e70b0',
    500: '#233b8e',
    950: '#000000',
  },
}

SCSS

$custom: #233b8e;
$custom-light: #6e70b0;
$custom-dark: #000000;

JSON

{
  "hex": "#233b8e",
  "rgb": {
    "r": 35,
    "g": 59,
    "b": 142
  },
  "hsl": {
    "h": 226.542,
    "s": 60.452,
    "l": 34.706
  },
  "oklch": {
    "l": 0.3869,
    "c": 0.14069,
    "h": 267.2
  },
  "luminance": 0.05438
}

Semantic roles & 50–950 ramp

primary

#233B8E

secondary

#B9A353

accent

#C044E4

background

#F7F6FA

surface

#EDECF5

border

#C8C7CF

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #233B8E

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

Preview Lab → · Contrast checker → · Palette generator →