#233D9D#233D9D

#233D9D is a dark, vivid blue. Relative luminance 0.061; OKLCH L 40.4% C 0.159 H 267.1°. Best body text is #FFFFFF at 9.43:1 contrast (WCAG AA passes).

Color values

HEX	#233D9D
RGB	rgb(35, 61, 157)
HSL	hsl(227, 64%, 38%)
HSV	hsv(227, 78%, 62%)
CMYK	cmyk(77.7%, 61.1%, 0%, 38.4%)
CIE-LAB	lab(29.73, 25.99, -54.99)
CIE-LCH	lch(29.73, 60.82, 295.30°)
OKLab	oklab(40.41% -0.008 -0.1589)
OKLCH	oklch(40.41% 0.159 267.1)
XYZ	xyz(8.4456, 6.1282, 32.6295)
Luminance	0.0613 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233D9D #9D8323

analogous

#237A9D #233D9D #46239D

triadic

#233D9D #9D233D #3D9D23

tetradic

#233D9D #9D237A #9D8323 #239D46

square

#233D9D #9D237A #9D8323 #239D46

split-complementary

#233D9D #9D4623 #7A9D23

monochromatic

#0D1639 #182A6B #233D9D #2E50CF #5F7ADB

Accessibility & contrast

On white

9.43

#233D9D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.23

#233D9D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233D9D

9.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233D9D	#FFFFFF	#000000	##FFFFFF
##233D9D	1.00	9.43	2.23	9.43
#FFFFFF	9.43	1.00	21.00	1.00
#000000	2.23	21.00	1.00	21.00
##FFFFFF	9.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CA0

Deuteranopia (green-blind)

#00419B

Tritanopia (blue-blind)

#005567

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #233d9d;
/* rgb */ color: rgb(35, 61, 157);
/* oklch */ color: oklch(40.4% 0.159 267.1);

Tailwind

colors: {
  custom: {
    50: '#7272bb',
    500: '#233d9d',
    950: '#000000',
  },
}

SCSS

$custom: #233d9d;
$custom-light: #7272bb;
$custom-dark: #000000;

JSON

{
  "hex": "#233d9d",
  "rgb": {
    "r": 35,
    "g": 61,
    "b": 157
  },
  "hsl": {
    "h": 227.213,
    "s": 63.542,
    "l": 37.647
  },
  "oklch": {
    "l": 0.40413,
    "c": 0.15909,
    "h": 267.1
  },
  "luminance": 0.06129
}

Semantic roles & 50–950 ramp

primary

#233D9D

secondary

#C0AB5C

accent

#C341E7

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #233D9D

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

Preview Lab → · Contrast checker → · Palette generator →