#233B5B#233B5B

#233B5B is a dark, moderate cyan. Relative luminance 0.042; OKLCH L 34.9% C 0.064 H 256.0°. Best body text is #FFFFFF at 11.36:1 contrast (WCAG AA passes).

Color values

HEX	#233B5B
RGB	rgb(35, 59, 91)
HSL	hsl(214, 44%, 25%)
HSV	hsv(214, 62%, 36%)
CMYK	cmyk(61.5%, 35.2%, 0%, 64.3%)
CIE-LAB	lab(24.45, 1.64, -21.96)
CIE-LCH	lch(24.45, 22.02, 274.26°)
OKLab	oklab(34.9% -0.0154 -0.062)
OKLCH	oklch(34.9% 0.064 256)
XYZ	xyz(4.1448, 4.2402, 10.4955)
Luminance	0.0424 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233B5B #5B4323

analogous

#23575B #233B5B #27235B

triadic

#233B5B #5B233B #3B5B23

tetradic

#233B5B #5B2357 #5B4323 #235B27

square

#233B5B #5B2357 #5B4323 #235B27

split-complementary

#233B5B #5B2723 #575B23

monochromatic

#090E16 #121E2F #233B5B #345887 #4574B3

Accessibility & contrast

On white

11.36

#233B5B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#233B5B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233B5B

11.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233B5B	#FFFFFF	#000000	##FFFFFF
##233B5B	1.00	11.36	1.85	11.36
#FFFFFF	11.36	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E3D5C

Deuteranopia (green-blind)

#27385A

Tritanopia (blue-blind)

#004246

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #233b5b;
/* rgb */ color: rgb(35, 59, 91);
/* oklch */ color: oklch(34.9% 0.064 256.0);

Tailwind

colors: {
  custom: {
    50: '#637089',
    500: '#233b5b',
    950: '#000000',
  },
}

SCSS

$custom: #233b5b;
$custom-light: #637089;
$custom-dark: #000000;

JSON

{
  "hex": "#233b5b",
  "rgb": {
    "r": 35,
    "g": 59,
    "b": 91
  },
  "hsl": {
    "h": 214.286,
    "s": 44.444,
    "l": 24.706
  },
  "oklch": {
    "l": 0.34896,
    "c": 0.06385,
    "h": 256
  },
  "luminance": 0.04241
}

Semantic roles & 50–950 ramp

primary

#233B5B

secondary

#8F724B

accent

#9D54D4

background

#F6F6F8

surface

#EBECF0

border

#C6C7CB

text

#05070B

muted

#7A7A7C

Preview Lab

Preview with #233B5B

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

Preview Lab → · Contrast checker → · Palette generator →