#233D88#233D88

#233D88 is a dark, vivid blue. Relative luminance 0.055; OKLCH L 38.6% C 0.129 H 266.0°. Best body text is #FFFFFF at 10.03:1 contrast (WCAG AA passes).

Color values

HEX	#233D88
RGB	rgb(35, 61, 136)
HSL	hsl(225, 59%, 34%)
HSV	hsv(225, 74%, 53%)
CMYK	cmyk(74.3%, 55.1%, 0%, 46.7%)
CIE-LAB	lab(28.04, 17.79, -44.86)
CIE-LCH	lch(28.04, 48.26, 291.63°)
OKLab	oklab(38.61% -0.0089 -0.1291)
OKLCH	oklch(38.61% 0.129 266)
XYZ	xyz(6.8043, 5.4717, 23.9853)
Luminance	0.0547 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233D88 #886E23

analogous

#236F88 #233D88 #3B2388

triadic

#233D88 #88233D #3D8823

tetradic

#233D88 #88236F #886E23 #23883B

square

#233D88 #88236F #886E23 #23883B

split-complementary

#233D88 #883B23 #6F8823

monochromatic

#0A1127 #162757 #233D88 #3053B9 #5374D3

Accessibility & contrast

On white

10.03

#233D88 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#233D88 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233D88

10.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233D88	#FFFFFF	#000000	##FFFFFF
##233D88	1.00	10.03	2.09	10.03
#FFFFFF	10.03	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#04478B

Deuteranopia (green-blind)

#003E87

Tritanopia (blue-blind)

#004F5C

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #233d88;
/* rgb */ color: rgb(35, 61, 136);
/* oklch */ color: oklch(38.6% 0.129 266.0);

Tailwind

colors: {
  custom: {
    50: '#6c72ab',
    500: '#233d88',
    950: '#000000',
  },
}

SCSS

$custom: #233d88;
$custom-light: #6c72ab;
$custom-dark: #000000;

JSON

{
  "hex": "#233d88",
  "rgb": {
    "r": 35,
    "g": 61,
    "b": 136
  },
  "hsl": {
    "h": 224.554,
    "s": 59.064,
    "l": 33.529
  },
  "oklch": {
    "l": 0.3861,
    "c": 0.12944,
    "h": 266
  },
  "luminance": 0.05472
}

Semantic roles & 50–950 ramp

primary

#233D88

secondary

#B79C50

accent

#BA46E2

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #233D88

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

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