#233F57#233F57

#233F57 is a dark, muted cyan. Relative luminance 0.046; OKLCH L 35.7% C 0.054 H 245.9°. Best body text is #FFFFFF at 10.94:1 contrast (WCAG AA passes).

Color values

HEX	#233F57
RGB	rgb(35, 63, 87)
HSL	hsl(208, 43%, 24%)
HSV	hsv(208, 60%, 34%)
CMYK	cmyk(59.8%, 27.6%, 0%, 65.9%)
CIE-LAB	lab(25.56, -2.52, -17.61)
CIE-LCH	lch(25.56, 17.79, 261.85°)
OKLab	oklab(35.7% -0.022 -0.0493)
OKLCH	oklch(35.7% 0.054 245.9)
XYZ	xyz(4.1903, 4.6001, 9.6821)
Luminance	0.0460 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233F57 #573B23

analogous

#235755 #233F57 #232557

triadic

#233F57 #57233F #3F5723

tetradic

#233F57 #552357 #573B23 #255723

square

#233F57 #552357 #573B23 #255723

split-complementary

#233F57 #572325 #575523

monochromatic

#091016 #111F2B #233F57 #355F83 #467EAE

Accessibility & contrast

On white

10.94

#233F57 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.92

#233F57 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233F57

10.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233F57	#FFFFFF	#000000	##FFFFFF
##233F57	1.00	10.94	1.92	10.94
#FFFFFF	10.94	1.00	21.00	1.00
#000000	1.92	21.00	1.00	21.00
##FFFFFF	10.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#353F58

Deuteranopia (green-blind)

#2E3A57

Tritanopia (blue-blind)

#014547

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #233f57;
/* rgb */ color: rgb(35, 63, 87);
/* oklch */ color: oklch(35.7% 0.054 245.9);

Tailwind

colors: {
  custom: {
    50: '#627386',
    500: '#233f57',
    950: '#000000',
  },
}

SCSS

$custom: #233f57;
$custom-light: #627386;
$custom-dark: #000000;

JSON

{
  "hex": "#233f57",
  "rgb": {
    "r": 35,
    "g": 63,
    "b": 87
  },
  "hsl": {
    "h": 207.692,
    "s": 42.623,
    "l": 23.922
  },
  "oklch": {
    "l": 0.35702,
    "c": 0.05403,
    "h": 245.9
  },
  "luminance": 0.046
}

Semantic roles & 50–950 ramp

primary

#233F57

secondary

#8B684B

accent

#8F55D2

background

#F6F7F8

surface

#EBEDEF

border

#C6C8CA

text

#05080B

muted

#7A7B7C

Preview Lab

Preview with #233F57

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

Preview Lab → · Contrast checker → · Palette generator →