#233F89#233F89

#233F89 is a dark, vivid blue. Relative luminance 0.057; OKLCH L 39.1% C 0.128 H 265.3°. Best body text is #FFFFFF at 9.80:1 contrast (WCAG AA passes).

Color values

HEX	#233F89
RGB	rgb(35, 63, 137)
HSL	hsl(224, 59%, 34%)
HSV	hsv(224, 74%, 54%)
CMYK	cmyk(74.5%, 54%, 0%, 46.3%)
CIE-LAB	lab(28.69, 16.80, -44.43)
CIE-LCH	lch(28.69, 47.50, 290.72°)
OKLab	oklab(39.13% -0.0106 -0.1278)
OKLCH	oklch(39.13% 0.128 265.3)
XYZ	xyz(6.9844, 5.7177, 24.3976)
Luminance	0.0572 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233F89 #896D23

analogous

#237289 #233F89 #3A2389

triadic

#233F89 #89233F #3F8923

tetradic

#233F89 #892372 #896D23 #23893A

square

#233F89 #892372 #896D23 #23893A

split-complementary

#233F89 #893A23 #728923

monochromatic

#0A1228 #172958 #233F89 #2F55BA #5376D3

Accessibility & contrast

On white

9.80

#233F89 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.14

#233F89 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233F89

9.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233F89	#FFFFFF	#000000	##FFFFFF
##233F89	1.00	9.80	2.14	9.80
#FFFFFF	9.80	1.00	21.00	1.00
#000000	2.14	21.00	1.00	21.00
##FFFFFF	9.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0C498C

Deuteranopia (green-blind)

#003F88

Tritanopia (blue-blind)

#00515D

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #233f89;
/* rgb */ color: rgb(35, 63, 137);
/* oklch */ color: oklch(39.1% 0.128 265.3);

Tailwind

colors: {
  custom: {
    50: '#6d73ac',
    500: '#233f89',
    950: '#000000',
  },
}

SCSS

$custom: #233f89;
$custom-light: #6d73ac;
$custom-dark: #000000;

JSON

{
  "hex": "#233f89",
  "rgb": {
    "r": 35,
    "g": 63,
    "b": 137
  },
  "hsl": {
    "h": 223.529,
    "s": 59.302,
    "l": 33.725
  },
  "oklch": {
    "l": 0.39127,
    "c": 0.12826,
    "h": 265.3
  },
  "luminance": 0.05718
}

Semantic roles & 50–950 ramp

primary

#233F89

secondary

#B79B51

accent

#B745E2

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080810

muted

#7B7B7F

Preview Lab

Preview with #233F89

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

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