#233B5A#233B5A

#233B5A is a dark, moderate cyan. Relative luminance 0.042; OKLCH L 34.8% C 0.062 H 255.4°. Best body text is #FFFFFF at 11.38:1 contrast (WCAG AA passes).

Color values

HEX	#233B5A
RGB	rgb(35, 59, 90)
HSL	hsl(214, 44%, 25%)
HSV	hsv(214, 61%, 35%)
CMYK	cmyk(61.1%, 34.4%, 0%, 64.7%)
CIE-LAB	lab(24.40, 1.26, -21.39)
CIE-LCH	lch(24.40, 21.43, 273.38°)
OKLab	oklab(34.84% -0.0157 -0.0603)
OKLCH	oklch(34.84% 0.062 255.4)
XYZ	xyz(4.1019, 4.2231, 10.2699)
Luminance	0.0422 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233B5A #5A4223

analogous

#23575A #233B5A #27235A

triadic

#233B5A #5A233B #3B5A23

tetradic

#233B5A #5A2357 #5A4223 #235A27

square

#233B5A #5A2357 #5A4223 #235A27

split-complementary

#233B5A #5A2723 #575A23

monochromatic

#090E16 #121E2E #233B5A #345886 #4575B2

Accessibility & contrast

On white

11.38

#233B5A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#233B5A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233B5A

11.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233B5A	#FFFFFF	#000000	##FFFFFF
##233B5A	1.00	11.38	1.84	11.38
#FFFFFF	11.38	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E3D5B

Deuteranopia (green-blind)

#273859

Tritanopia (blue-blind)

#004246

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #233b5a;
/* rgb */ color: rgb(35, 59, 90);
/* oklch */ color: oklch(34.8% 0.062 255.4);

Tailwind

colors: {
  custom: {
    50: '#637089',
    500: '#233b5a',
    950: '#000000',
  },
}

SCSS

$custom: #233b5a;
$custom-light: #637089;
$custom-dark: #000000;

JSON

{
  "hex": "#233b5a",
  "rgb": {
    "r": 35,
    "g": 59,
    "b": 90
  },
  "hsl": {
    "h": 213.818,
    "s": 44,
    "l": 24.51
  },
  "oklch": {
    "l": 0.34836,
    "c": 0.06233,
    "h": 255.4
  },
  "luminance": 0.04223
}

Semantic roles & 50–950 ramp

primary

#233B5A

secondary

#8E714B

accent

#9C54D4

background

#F6F6F8

surface

#EBECF0

border

#C6C7CB

text

#05070B

muted

#7A7A7C

Preview Lab

Preview with #233B5A

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

Preview Lab → · Contrast checker → · Palette generator →