#2D288B#2D288B

#2D288B is a dark, vivid blue. Relative luminance 0.039; OKLCH L 35.5% C 0.158 H 277.0°. Best body text is #FFFFFF at 11.74:1 contrast (WCAG AA passes).

Color values

HEX	#2D288B
RGB	rgb(45, 40, 139)
HSL	hsl(243, 55%, 35%)
HSV	hsv(243, 71%, 55%)
CMYK	cmyk(67.6%, 71.2%, 0%, 45.5%)
CIE-LAB	lab(23.47, 34.34, -54.16)
CIE-LCH	lch(23.47, 64.13, 302.38°)
OKLab	oklab(35.48% 0.0191 -0.1563)
OKLCH	oklch(35.48% 0.158 277)
XYZ	xyz(6.4997, 3.9390, 24.8389)
Luminance	0.0394 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2D288B #868B28

analogous

#28558B #2D288B #5E288B

triadic

#2D288B #8B2D28 #288B2D

tetradic

#2D288B #8B2855 #868B28 #288B5E

square

#2D288B #8B2855 #868B28 #288B5E

split-complementary

#2D288B #8B5E28 #558B28

monochromatic

#0E0D2C #1E1A5B #2D288B #3C36BB #635DD0

Accessibility & contrast

On white

11.74

#2D288B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.79

#2D288B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2D288B

11.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2D288B	#FFFFFF	#000000	##FFFFFF
##2D288B	1.00	11.74	1.79	11.74
#FFFFFF	11.74	1.00	21.00	1.00
#000000	1.79	21.00	1.00	21.00
##FFFFFF	11.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C8E

Deuteranopia (green-blind)

#003489

Tritanopia (blue-blind)

#004356

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #2d288b;
/* rgb */ color: rgb(45, 40, 139);
/* oklch */ color: oklch(35.5% 0.158 277.0);

Tailwind

colors: {
  custom: {
    50: '#7363ae',
    500: '#2d288b',
    950: '#000000',
  },
}

SCSS

$custom: #2d288b;
$custom-light: #7363ae;
$custom-dark: #000000;

JSON

{
  "hex": "#2d288b",
  "rgb": {
    "r": 45,
    "g": 40,
    "b": 139
  },
  "hsl": {
    "h": 243.03,
    "s": 55.307,
    "l": 35.098
  },
  "oklch": {
    "l": 0.35478,
    "c": 0.15751,
    "h": 277
  },
  "luminance": 0.0394
}

Semantic roles & 50–950 ramp

primary

#2D288B

secondary

#B1B659

accent

#DF49D7

background

#F7F5FA

surface

#EDEAF4

border

#C8C6CE

text

#090510

muted

#7B797F

Preview Lab

Preview with #2D288B

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

Preview Lab → · Contrast checker → · Palette generator →