#233C99#233C99

#233C99 is a dark, vivid blue. Relative luminance 0.059; OKLCH L 39.9% C 0.155 H 267.3°. Best body text is #FFFFFF at 9.64:1 contrast (WCAG AA passes).

Color values

HEX	#233C99
RGB	rgb(35, 60, 153)
HSL	hsl(227, 63%, 37%)
HSV	hsv(227, 77%, 60%)
CMYK	cmyk(77.1%, 60.8%, 0%, 40%)
CIE-LAB	lab(29.13, 25.12, -53.54)
CIE-LCH	lch(29.13, 59.14, 295.14°)
OKLab	oklab(39.86% -0.0073 -0.1547)
OKLCH	oklch(39.86% 0.155 267.3)
XYZ	xyz(8.0568, 5.8881, 30.8427)
Luminance	0.0589 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233C99 #998023

analogous

#237799 #233C99 #452399

triadic

#233C99 #99233C #3C9923

tetradic

#233C99 #992377 #998023 #239945

square

#233C99 #992377 #998023 #239945

split-complementary

#233C99 #994523 #779923

monochromatic

#0C1535 #182867 #233C99 #2E50CB #5D77DA

Accessibility & contrast

On white

9.64

#233C99 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.18

#233C99 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233C99

9.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233C99	#FFFFFF	#000000	##FFFFFF
##233C99	1.00	9.64	2.18	9.64
#FFFFFF	9.64	1.00	21.00	1.00
#000000	2.18	21.00	1.00	21.00
##FFFFFF	9.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004A9C

Deuteranopia (green-blind)

#003F97

Tritanopia (blue-blind)

#005464

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #233c99;
/* rgb */ color: rgb(35, 60, 153);
/* oklch */ color: oklch(39.9% 0.155 267.3);

Tailwind

colors: {
  custom: {
    50: '#7171b8',
    500: '#233c99',
    950: '#000000',
  },
}

SCSS

$custom: #233c99;
$custom-light: #7171b8;
$custom-dark: #000000;

JSON

{
  "hex": "#233c99",
  "rgb": {
    "r": 35,
    "g": 60,
    "b": 153
  },
  "hsl": {
    "h": 227.288,
    "s": 62.766,
    "l": 36.863
  },
  "oklch": {
    "l": 0.39857,
    "c": 0.15483,
    "h": 267.3
  },
  "luminance": 0.05889
}

Semantic roles & 50–950 ramp

primary

#233C99

secondary

#BEA959

accent

#C342E6

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090711

muted

#7B7A80

Preview Lab

Preview with #233C99

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

Preview Lab → · Contrast checker → · Palette generator →