#233B4B#233B4B

#233B4B is a dark, muted cyan. Relative luminance 0.040; OKLCH L 34.0% C 0.041 H 238.8°. Best body text is #FFFFFF at 11.68:1 contrast (WCAG AA passes).

Color values

HEX	#233B4B
RGB	rgb(35, 59, 75)
HSL	hsl(204, 36%, 22%)
HSV	hsv(204, 53%, 29%)
CMYK	cmyk(53.3%, 21.3%, 0%, 70.6%)
CIE-LAB	lab(23.65, -4.13, -12.67)
CIE-LCH	lch(23.65, 13.32, 251.94°)
OKLab	oklab(34% -0.0213 -0.0352)
OKLCH	oklch(34% 0.041 238.8)
XYZ	xyz(3.5267, 3.9930, 7.2401)
Luminance	0.0399 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233B4B #4B3323

analogous

#234B47 #233B4B #23274B

triadic

#233B4B #4B233B #3B4B23

tetradic

#233B4B #47234B #4B3323 #274B23

square

#233B4B #47234B #4B3323 #274B23

split-complementary

#233B4B #4B2327 #4B4723

monochromatic

#0A1015 #101A21 #233B4B #365C75 #4A7D9E

Accessibility & contrast

On white

11.68

#233B4B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.80

#233B4B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233B4B

11.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233B4B	#FFFFFF	#000000	##FFFFFF
##233B4B	1.00	11.68	1.80	11.68
#FFFFFF	11.68	1.00	21.00	1.00
#000000	1.80	21.00	1.00	21.00
##FFFFFF	11.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#343B4C

Deuteranopia (green-blind)

#2E364B

Tritanopia (blue-blind)

#103F40

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #233b4b;
/* rgb */ color: rgb(35, 59, 75);
/* oklch */ color: oklch(34.0% 0.041 238.8);

Tailwind

colors: {
  custom: {
    50: '#61707d',
    500: '#233b4b',
    950: '#000000',
  },
}

SCSS

$custom: #233b4b;
$custom-light: #61707d;
$custom-dark: #000000;

JSON

{
  "hex": "#233b4b",
  "rgb": {
    "r": 35,
    "g": 59,
    "b": 75
  },
  "hsl": {
    "h": 204,
    "s": 36.364,
    "l": 21.569
  },
  "oklch": {
    "l": 0.34001,
    "c": 0.04114,
    "h": 238.8
  },
  "luminance": 0.03993
}

Semantic roles & 50–950 ramp

primary

#233B4B

secondary

#7F604B

accent

#895BCC

background

#F5F6F7

surface

#EAECEE

border

#C6C7C9

text

#050709

muted

#797A7B

Preview Lab

Preview with #233B4B

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

Preview Lab → · Contrast checker → · Palette generator →