#233F8D#233F8D

#233F8D is a dark, vivid blue. Relative luminance 0.058; OKLCH L 39.5% C 0.134 H 265.6°. Best body text is #FFFFFF at 9.69:1 contrast (WCAG AA passes).

Color values

HEX	#233F8D
RGB	rgb(35, 63, 141)
HSL	hsl(224, 60%, 35%)
HSV	hsv(224, 75%, 55%)
CMYK	cmyk(75.2%, 55.3%, 0%, 44.7%)
CIE-LAB	lab(28.99, 18.38, -46.41)
CIE-LCH	lch(28.99, 49.92, 291.61°)
OKLab	oklab(39.45% -0.0102 -0.1336)
OKLCH	oklch(39.45% 0.134 265.6)
XYZ	xyz(7.2767, 5.8346, 25.9368)
Luminance	0.0583 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233F8D #8D7123

analogous

#23748D #233F8D #3C238D

triadic

#233F8D #8D233F #3F8D23

tetradic

#233F8D #8D2374 #8D7123 #238D3C

square

#233F8D #8D2374 #8D7123 #238D3C

split-complementary

#233F8D #8D3C23 #748D23

monochromatic

#0B132B #17295C #233F8D #2F55BE #5577D5

Accessibility & contrast

On white

9.69

#233F8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.17

#233F8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233F8D

9.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233F8D	#FFFFFF	#000000	##FFFFFF
##233F8D	1.00	9.69	2.17	9.69
#FFFFFF	9.69	1.00	21.00	1.00
#000000	2.17	21.00	1.00	21.00
##FFFFFF	9.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#014990

Deuteranopia (green-blind)

#00408B

Tritanopia (blue-blind)

#00525F

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #233f8d;
/* rgb */ color: rgb(35, 63, 141);
/* oklch */ color: oklch(39.5% 0.134 265.6);

Tailwind

colors: {
  custom: {
    50: '#6e73af',
    500: '#233f8d',
    950: '#000000',
  },
}

SCSS

$custom: #233f8d;
$custom-light: #6e73af;
$custom-dark: #000000;

JSON

{
  "hex": "#233f8d",
  "rgb": {
    "r": 35,
    "g": 63,
    "b": 141
  },
  "hsl": {
    "h": 224.151,
    "s": 60.227,
    "l": 34.51
  },
  "oklch": {
    "l": 0.39452,
    "c": 0.13404,
    "h": 265.6
  },
  "luminance": 0.05835
}

Semantic roles & 50–950 ramp

primary

#233F8D

secondary

#B99E53

accent

#B944E3

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080810

muted

#7B7B7F

Preview Lab

Preview with #233F8D

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

Preview Lab → · Contrast checker → · Palette generator →