#2A3587#2A3587

#2A3587 is a dark, vivid blue. Relative luminance 0.048; OKLCH L 37.3% C 0.136 H 272.2°. Best body text is #FFFFFF at 10.73:1 contrast (WCAG AA passes).

Color values

HEX	#2A3587
RGB	rgb(42, 53, 135)
HSL	hsl(233, 53%, 35%)
HSV	hsv(233, 69%, 53%)
CMYK	cmyk(68.9%, 60.7%, 0%, 47.1%)
CIE-LAB	lab(26.12, 23.96, -47.34)
CIE-LCH	lch(26.12, 53.06, 296.85°)
OKLab	oklab(37.25% 0.0051 -0.1364)
OKLCH	oklch(37.25% 0.136 272.2)
XYZ	xyz(6.5997, 4.7871, 23.4932)
Luminance	0.0479 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2A3587 #877C2A

analogous

#2A6487 #2A3587 #4D2A87

triadic

#2A3587 #872A35 #35872A

tetradic

#2A3587 #872A64 #877C2A #2A874D

square

#2A3587 #872A64 #877C2A #2A874D

split-complementary

#2A3587 #874D2A #64872A

monochromatic

#0D102A #1B2358 #2A3587 #3947B6 #5E6BCD

Accessibility & contrast

On white

10.73

#2A3587 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.96

#2A3587 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2A3587

10.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2A3587	#FFFFFF	#000000	##FFFFFF
##2A3587	1.00	10.73	1.96	10.73
#FFFFFF	10.73	1.00	21.00	1.00
#000000	1.96	21.00	1.00	21.00
##FFFFFF	10.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00428A

Deuteranopia (green-blind)

#003A85

Tritanopia (blue-blind)

#004958

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #2a3587;
/* rgb */ color: rgb(42, 53, 135);
/* oklch */ color: oklch(37.3% 0.136 272.2);

Tailwind

colors: {
  custom: {
    50: '#706cab',
    500: '#2a3587',
    950: '#000000',
  },
}

SCSS

$custom: #2a3587;
$custom-light: #706cab;
$custom-dark: #000000;

JSON

{
  "hex": "#2a3587",
  "rgb": {
    "r": 42,
    "g": 53,
    "b": 135
  },
  "hsl": {
    "h": 232.903,
    "s": 52.542,
    "l": 34.706
  },
  "oklch": {
    "l": 0.3725,
    "c": 0.13647,
    "h": 272.2
  },
  "luminance": 0.04788
}

Semantic roles & 50–950 ramp

primary

#2A3587

secondary

#B3A85A

accent

#CB4CDC

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080610

muted

#7B7A7F

Preview Lab

Preview with #2A3587

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

Preview Lab → · Contrast checker → · Palette generator →