#2A3583#2A3583

#2A3583 is a dark, vivid blue. Relative luminance 0.047; OKLCH L 36.9% C 0.131 H 272.2°. Best body text is #FFFFFF at 10.85:1 contrast (WCAG AA passes).

Color values

HEX	#2A3583
RGB	rgb(42, 53, 131)
HSL	hsl(233, 51%, 34%)
HSV	hsv(233, 68%, 51%)
CMYK	cmyk(67.9%, 59.5%, 0%, 48.6%)
CIE-LAB	lab(25.79, 22.46, -45.37)
CIE-LCH	lch(25.79, 50.62, 296.34°)
OKLab	oklab(36.9% 0.0051 -0.1306)
OKLCH	oklch(36.9% 0.131 272.2)
XYZ	xyz(6.3233, 4.6766, 22.0378)
Luminance	0.0468 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2A3583 #83782A

analogous

#2A6283 #2A3583 #4C2A83

triadic

#2A3583 #832A35 #35832A

tetradic

#2A3583 #832A62 #83782A #2A834C

square

#2A3583 #832A62 #83782A #2A834C

split-complementary

#2A3583 #834C2A #62832A

monochromatic

#0C1026 #1B2255 #2A3583 #3948B1 #5D6ACB

Accessibility & contrast

On white

10.85

#2A3583 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#2A3583 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2A3583

10.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2A3583	#FFFFFF	#000000	##FFFFFF
##2A3583	1.00	10.85	1.94	10.85
#FFFFFF	10.85	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004186

Deuteranopia (green-blind)

#003981

Tritanopia (blue-blind)

#004856

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #2a3583;
/* rgb */ color: rgb(42, 53, 131);
/* oklch */ color: oklch(36.9% 0.131 272.2);

Tailwind

colors: {
  custom: {
    50: '#6f6ca8',
    500: '#2a3583',
    950: '#000000',
  },
}

SCSS

$custom: #2a3583;
$custom-light: #6f6ca8;
$custom-dark: #000000;

JSON

{
  "hex": "#2a3583",
  "rgb": {
    "r": 42,
    "g": 53,
    "b": 131
  },
  "hsl": {
    "h": 232.584,
    "s": 51.445,
    "l": 33.922
  },
  "oklch": {
    "l": 0.36904,
    "c": 0.13069,
    "h": 272.2
  },
  "luminance": 0.04677
}

Semantic roles & 50–950 ramp

primary

#2A3583

secondary

#B1A658

accent

#C94DDB

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080610

muted

#7B7A7F

Preview Lab

Preview with #2A3583

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

Preview Lab → · Contrast checker → · Palette generator →