#2B3181#2B3181

#2B3181 is a dark, vivid blue. Relative luminance 0.043; OKLCH L 36.0% C 0.133 H 274.3°. Best body text is #FFFFFF at 11.30:1 contrast (WCAG AA passes).

Color values

HEX	#2B3181
RGB	rgb(43, 49, 129)
HSL	hsl(236, 50%, 34%)
HSV	hsv(236, 67%, 51%)
CMYK	cmyk(66.7%, 62%, 0%, 49.4%)
CIE-LAB	lab(24.62, 24.60, -46.02)
CIE-LCH	lch(24.62, 52.18, 298.13°)
OKLab	oklab(36% 0.01 -0.1325)
OKLCH	oklch(36% 0.133 274.3)
XYZ	xyz(6.0557, 4.2947, 21.2745)
Luminance	0.0430 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B3181 #817B2B

analogous

#2B5C81 #2B3181 #502B81

triadic

#2B3181 #812B31 #31812B

tetradic

#2B3181 #812B5C #817B2B #2B8150

square

#2B3181 #812B5C #817B2B #2B8150

split-complementary

#2B3181 #81502B #5C812B

monochromatic

#0C0E25 #1C2053 #2B3181 #3A42AF #5D65C9

Accessibility & contrast

On white

11.30

#2B3181 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#2B3181 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B3181

11.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B3181	#FFFFFF	#000000	##FFFFFF
##2B3181	1.00	11.30	1.86	11.30
#FFFFFF	11.30	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E84

Deuteranopia (green-blind)

#00377F

Tritanopia (blue-blind)

#004554

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #2b3181;
/* rgb */ color: rgb(43, 49, 129);
/* oklch */ color: oklch(36.0% 0.133 274.3);

Tailwind

colors: {
  custom: {
    50: '#6f69a6',
    500: '#2b3181',
    950: '#000000',
  },
}

SCSS

$custom: #2b3181;
$custom-light: #6f69a6;
$custom-dark: #000000;

JSON

{
  "hex": "#2b3181",
  "rgb": {
    "r": 43,
    "g": 49,
    "b": 129
  },
  "hsl": {
    "h": 235.814,
    "s": 50,
    "l": 33.725
  },
  "oklch": {
    "l": 0.36002,
    "c": 0.13288,
    "h": 274.3
  },
  "luminance": 0.04295
}

Semantic roles & 50–950 ramp

primary

#2B3181

secondary

#AFA959

accent

#D04EDA

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#08060F

muted

#7B7A7F

Preview Lab

Preview with #2B3181

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

Preview Lab → · Contrast checker → · Palette generator →