#2A3581#2A3581

#2A3581 is a dark, vivid blue. Relative luminance 0.046; OKLCH L 36.7% C 0.128 H 272.3°. Best body text is #FFFFFF at 10.91:1 contrast (WCAG AA passes).

Color values

HEX	#2A3581
RGB	rgb(42, 53, 129)
HSL	hsl(232, 51%, 34%)
HSV	hsv(232, 67%, 51%)
CMYK	cmyk(67.4%, 58.9%, 0%, 49.4%)
CIE-LAB	lab(25.63, 21.71, -44.38)
CIE-LCH	lch(25.63, 49.40, 296.07°)
OKLab	oklab(36.73% 0.0051 -0.1277)
OKLCH	oklch(36.73% 0.128 272.3)
XYZ	xyz(6.1891, 4.6229, 21.3308)
Luminance	0.0462 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2A3581 #81762A

analogous

#2A6081 #2A3581 #4A2A81

triadic

#2A3581 #812A35 #35812A

tetradic

#2A3581 #812A60 #81762A #2A814A

square

#2A3581 #812A60 #81762A #2A814A

split-complementary

#2A3581 #814A2A #60812A

monochromatic

#0C0F25 #1B2253 #2A3581 #3948AF #5C6ACA

Accessibility & contrast

On white

10.91

#2A3581 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.92

#2A3581 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2A3581

10.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2A3581	#FFFFFF	#000000	##FFFFFF
##2A3581	1.00	10.91	1.92	10.91
#FFFFFF	10.91	1.00	21.00	1.00
#000000	1.92	21.00	1.00	21.00
##FFFFFF	10.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004184

Deuteranopia (green-blind)

#00397F

Tritanopia (blue-blind)

#004755

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #2a3581;
/* rgb */ color: rgb(42, 53, 129);
/* oklch */ color: oklch(36.7% 0.128 272.3);

Tailwind

colors: {
  custom: {
    50: '#6e6ca6',
    500: '#2a3581',
    950: '#000000',
  },
}

SCSS

$custom: #2a3581;
$custom-light: #6e6ca6;
$custom-dark: #000000;

JSON

{
  "hex": "#2a3581",
  "rgb": {
    "r": 42,
    "g": 53,
    "b": 129
  },
  "hsl": {
    "h": 232.414,
    "s": 50.877,
    "l": 33.529
  },
  "oklch": {
    "l": 0.36734,
    "c": 0.12777,
    "h": 272.3
  },
  "luminance": 0.04623
}

Semantic roles & 50–950 ramp

primary

#2A3581

secondary

#AFA457

accent

#C94DDA

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#08060F

muted

#7B7A7F

Preview Lab

Preview with #2A3581

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

Preview Lab → · Contrast checker → · Palette generator →