#233B8B#233B8B

#233B8B is a dark, vivid blue. Relative luminance 0.053; OKLCH L 38.4% C 0.136 H 267.0°. Best body text is #FFFFFF at 10.15:1 contrast (WCAG AA passes).

Color values

HEX	#233B8B
RGB	rgb(35, 59, 139)
HSL	hsl(226, 60%, 34%)
HSV	hsv(226, 75%, 55%)
CMYK	cmyk(74.8%, 57.6%, 0%, 45.5%)
CIE-LAB	lab(27.71, 20.35, -47.26)
CIE-LCH	lch(27.71, 51.45, 293.30°)
OKLab	oklab(38.43% -0.0071 -0.1362)
OKLCH	oklch(38.43% 0.136 267)
XYZ	xyz(6.9157, 5.3486, 25.0890)
Luminance	0.0535 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233B8B #8B7323

analogous

#236F8B #233B8B #3F238B

triadic

#233B8B #8B233B #3B8B23

tetradic

#233B8B #8B236F #8B7323 #238B3F

square

#233B8B #8B236F #8B7323 #238B3F

split-complementary

#233B8B #8B3F23 #6F8B23

monochromatic

#0A1129 #17265A #233B8B #2F50BC #5472D4

Accessibility & contrast

On white

10.15

#233B8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.07

#233B8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233B8B

10.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233B8B	#FFFFFF	#000000	##FFFFFF
##233B8B	1.00	10.15	2.07	10.15
#FFFFFF	10.15	1.00	21.00	1.00
#000000	2.07	21.00	1.00	21.00
##FFFFFF	10.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00468E

Deuteranopia (green-blind)

#003D89

Tritanopia (blue-blind)

#004F5D

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #233b8b;
/* rgb */ color: rgb(35, 59, 139);
/* oklch */ color: oklch(38.4% 0.136 267.0);

Tailwind

colors: {
  custom: {
    50: '#6d70ae',
    500: '#233b8b',
    950: '#000000',
  },
}

SCSS

$custom: #233b8b;
$custom-light: #6d70ae;
$custom-dark: #000000;

JSON

{
  "hex": "#233b8b",
  "rgb": {
    "r": 35,
    "g": 59,
    "b": 139
  },
  "hsl": {
    "h": 226.154,
    "s": 59.77,
    "l": 34.118
  },
  "oklch": {
    "l": 0.38434,
    "c": 0.1364,
    "h": 267
  },
  "luminance": 0.05349
}

Semantic roles & 50–950 ramp

primary

#233B8B

secondary

#B8A052

accent

#BE45E3

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #233B8B

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

Preview Lab → · Contrast checker → · Palette generator →