#281B6C#281B6C

#281B6C is a dark, vivid blue. Relative luminance 0.023; OKLCH L 29.9% C 0.132 H 282.1°. Best body text is #FFFFFF at 14.35:1 contrast (WCAG AA passes).

Color values

HEX	#281B6C
RGB	rgb(40, 27, 108)
HSL	hsl(250, 60%, 26%)
HSV	hsv(250, 75%, 42%)
CMYK	cmyk(63%, 75%, 0%, 57.6%)
CIE-LAB	lab(17.07, 30.97, -44.93)
CIE-LCH	lch(17.07, 54.57, 304.58°)
OKLab	oklab(29.85% 0.0278 -0.1295)
OKLCH	oklch(29.85% 0.132 282.1)
XYZ	xyz(3.9729, 2.3174, 14.4224)
Luminance	0.0232 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281B6C #5F6C1B

analogous

#1B376C #281B6C #511B6C

triadic

#281B6C #6C281B #1B6C28

tetradic

#281B6C #6C1B37 #5F6C1B #1B6C51

square

#281B6C #6C1B37 #5F6C1B #1B6C51

split-complementary

#281B6C #6C511B #376C1B

monochromatic

#090618 #160F3B #281B6C #3A279D #4D35CC

Accessibility & contrast

On white

14.35

#281B6C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.46

#281B6C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281B6C

14.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281B6C	#FFFFFF	#000000	##FFFFFF
##281B6C	1.00	14.35	1.46	14.35
#FFFFFF	14.35	1.00	21.00	1.00
#000000	1.46	21.00	1.00	21.00
##FFFFFF	14.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002D6E

Deuteranopia (green-blind)

#00276A

Tritanopia (blue-blind)

#003141

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #281b6c;
/* rgb */ color: rgb(40, 27, 108);
/* oklch */ color: oklch(29.9% 0.132 282.1);

Tailwind

colors: {
  custom: {
    50: '#6b5997',
    500: '#281b6c',
    950: '#000000',
  },
}

SCSS

$custom: #281b6c;
$custom-light: #6b5997;
$custom-dark: #000000;

JSON

{
  "hex": "#281b6c",
  "rgb": {
    "r": 40,
    "g": 27,
    "b": 108
  },
  "hsl": {
    "h": 249.63,
    "s": 60,
    "l": 26.471
  },
  "oklch": {
    "l": 0.29855,
    "c": 0.13244,
    "h": 282.1
  },
  "luminance": 0.02318
}

Semantic roles & 50–950 ramp

primary

#281B6C

secondary

#92A142

accent

#E345CA

background

#F6F5F9

surface

#ECE9F2

border

#C7C5CC

text

#07030D

muted

#7A787E

Preview Lab

Preview with #281B6C

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

Preview Lab → · Contrast checker → · Palette generator →