#233A5D#233A5D

#233A5D is a dark, moderate blue. Relative luminance 0.042; OKLCH L 34.8% C 0.068 H 258.5°. Best body text is #FFFFFF at 11.45:1 contrast (WCAG AA passes).

Color values

HEX	#233A5D
RGB	rgb(35, 58, 93)
HSL	hsl(216, 45%, 25%)
HSV	hsv(216, 62%, 36%)
CMYK	cmyk(62.4%, 37.6%, 0%, 63.5%)
CIE-LAB	lab(24.24, 3.07, -23.60)
CIE-LCH	lch(24.24, 23.80, 277.42°)
OKLab	oklab(34.77% -0.0135 -0.0668)
OKLCH	oklch(34.77% 0.068 258.5)
XYZ	xyz(4.1813, 4.1734, 10.9390)
Luminance	0.0417 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233A5D #5D4623

analogous

#23575D #233A5D #29235D

triadic

#233A5D #5D233A #3A5D23

tetradic

#233A5D #5D2357 #5D4623 #235D29

square

#233A5D #5D2357 #5D4623 #235D29

split-complementary

#233A5D #5D2923 #575D23

monochromatic

#080E16 #121E31 #233A5D #345689 #4471B6

Accessibility & contrast

On white

11.45

#233A5D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#233A5D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233A5D

11.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233A5D	#FFFFFF	#000000	##FFFFFF
##233A5D	1.00	11.45	1.83	11.45
#FFFFFF	11.45	1.00	21.00	1.00
#000000	1.83	21.00	1.00	21.00
##FFFFFF	11.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C3D5E

Deuteranopia (green-blind)

#24375C

Tritanopia (blue-blind)

#004247

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #233a5d;
/* rgb */ color: rgb(35, 58, 93);
/* oklch */ color: oklch(34.8% 0.068 258.5);

Tailwind

colors: {
  custom: {
    50: '#636f8b',
    500: '#233a5d',
    950: '#000000',
  },
}

SCSS

$custom: #233a5d;
$custom-light: #636f8b;
$custom-dark: #000000;

JSON

{
  "hex": "#233a5d",
  "rgb": {
    "r": 35,
    "g": 58,
    "b": 93
  },
  "hsl": {
    "h": 216.207,
    "s": 45.312,
    "l": 25.098
  },
  "oklch": {
    "l": 0.34766,
    "c": 0.06812,
    "h": 258.5
  },
  "luminance": 0.04174
}

Semantic roles & 50–950 ramp

primary

#233A5D

secondary

#91754B

accent

#A153D5

background

#F6F6F8

surface

#EBECF0

border

#C6C7CB

text

#06070C

muted

#7A7A7D

Preview Lab

Preview with #233A5D

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

Preview Lab → · Contrast checker → · Palette generator →