#233A8A#233A8A

#233A8A is a dark, vivid blue. Relative luminance 0.052; OKLCH L 38.1% C 0.136 H 267.4°. Best body text is #FFFFFF at 10.28:1 contrast (WCAG AA passes).

Color values

HEX	#233A8A
RGB	rgb(35, 58, 138)
HSL	hsl(227, 60%, 34%)
HSV	hsv(227, 75%, 54%)
CMYK	cmyk(74.6%, 58%, 0%, 45.9%)
CIE-LAB	lab(27.35, 20.65, -47.22)
CIE-LCH	lch(27.35, 51.54, 293.62°)
OKLab	oklab(38.14% -0.0063 -0.1361)
OKLCH	oklch(38.14% 0.136 267.4)
XYZ	xyz(6.7920, 5.2177, 24.6890)
Luminance	0.0522 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233A8A #8A7323

analogous

#236E8A #233A8A #40238A

triadic

#233A8A #8A233A #3A8A23

tetradic

#233A8A #8A236E #8A7323 #238A40

square

#233A8A #8A236E #8A7323 #238A40

split-complementary

#233A8A #8A4023 #6E8A23

monochromatic

#0A1128 #172559 #233A8A #2F4FBB #5470D4

Accessibility & contrast

On white

10.28

#233A8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.04

#233A8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233A8A

10.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233A8A	#FFFFFF	#000000	##FFFFFF
##233A8A	1.00	10.28	2.04	10.28
#FFFFFF	10.28	1.00	21.00	1.00
#000000	2.04	21.00	1.00	21.00
##FFFFFF	10.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00468D

Deuteranopia (green-blind)

#003C88

Tritanopia (blue-blind)

#004E5C

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #233a8a;
/* rgb */ color: rgb(35, 58, 138);
/* oklch */ color: oklch(38.1% 0.136 267.4);

Tailwind

colors: {
  custom: {
    50: '#6d6fad',
    500: '#233a8a',
    950: '#000000',
  },
}

SCSS

$custom: #233a8a;
$custom-light: #6d6fad;
$custom-dark: #000000;

JSON

{
  "hex": "#233a8a",
  "rgb": {
    "r": 35,
    "g": 58,
    "b": 138
  },
  "hsl": {
    "h": 226.602,
    "s": 59.538,
    "l": 33.922
  },
  "oklch": {
    "l": 0.38138,
    "c": 0.13628,
    "h": 267.4
  },
  "luminance": 0.05218
}

Semantic roles & 50–950 ramp

primary

#233A8A

secondary

#B7A151

accent

#C045E3

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #233A8A

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

Preview Lab → · Contrast checker → · Palette generator →