#233F88#233F88

#233F88 is a dark, vivid blue. Relative luminance 0.057; OKLCH L 39.0% C 0.127 H 265.2°. Best body text is #FFFFFF at 9.82:1 contrast (WCAG AA passes).

Color values

HEX	#233F88
RGB	rgb(35, 63, 136)
HSL	hsl(223, 59%, 34%)
HSV	hsv(223, 74%, 53%)
CMYK	cmyk(74.3%, 53.7%, 0%, 46.7%)
CIE-LAB	lab(28.61, 16.41, -43.93)
CIE-LCH	lch(28.61, 46.89, 290.48°)
OKLab	oklab(39.05% -0.0107 -0.1263)
OKLCH	oklch(39.05% 0.127 265.2)
XYZ	xyz(6.9130, 5.6892, 24.0216)
Luminance	0.0569 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233F88 #886C23

analogous

#237188 #233F88 #392388

triadic

#233F88 #88233F #3F8823

tetradic

#233F88 #882371 #886C23 #238839

square

#233F88 #882371 #886C23 #238839

split-complementary

#233F88 #883923 #718823

monochromatic

#0A1227 #162857 #233F88 #3056B9 #5376D3

Accessibility & contrast

On white

9.82

#233F88 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.14

#233F88 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233F88

9.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233F88	#FFFFFF	#000000	##FFFFFF
##233F88	1.00	9.82	2.14	9.82
#FFFFFF	9.82	1.00	21.00	1.00
#000000	2.14	21.00	1.00	21.00
##FFFFFF	9.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0E488B

Deuteranopia (green-blind)

#003F87

Tritanopia (blue-blind)

#00515D

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #233f88;
/* rgb */ color: rgb(35, 63, 136);
/* oklch */ color: oklch(39.0% 0.127 265.2);

Tailwind

colors: {
  custom: {
    50: '#6c73ab',
    500: '#233f88',
    950: '#000000',
  },
}

SCSS

$custom: #233f88;
$custom-light: #6c73ab;
$custom-dark: #000000;

JSON

{
  "hex": "#233f88",
  "rgb": {
    "r": 35,
    "g": 63,
    "b": 136
  },
  "hsl": {
    "h": 223.366,
    "s": 59.064,
    "l": 33.529
  },
  "oklch": {
    "l": 0.39047,
    "c": 0.1268,
    "h": 265.2
  },
  "luminance": 0.0569
}

Semantic roles & 50–950 ramp

primary

#233F88

secondary

#B79A50

accent

#B746E2

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#080810

muted

#7A7B7F

Preview Lab

Preview with #233F88

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

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