#281588#281588

#281588 is a dark, vivid blue. Relative luminance 0.028; OKLCH L 32.2% C 0.174 H 277.8°. Best body text is #FFFFFF at 13.52:1 contrast (WCAG AA passes).

Color values

HEX	#281588
RGB	rgb(40, 21, 136)
HSL	hsl(250, 73%, 31%)
HSV	hsv(250, 85%, 53%)
CMYK	cmyk(70.6%, 84.6%, 0%, 46.7%)
CIE-LAB	lab(19.07, 43.21, -59.54)
CIE-LCH	lch(19.07, 73.57, 305.97°)
OKLab	oklab(32.18% 0.0236 -0.172)
OKLCH	oklch(32.18% 0.174 277.8)
XYZ	xyz(5.5857, 2.7645, 23.5270)
Luminance	0.0277 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281588 #758815

analogous

#153B88 #281588 #611588

triadic

#281588 #882815 #158828

tetradic

#281588 #88153B #758815 #158861

square

#281588 #88153B #758815 #158861

split-complementary

#281588 #886115 #3B8815

monochromatic

#09051E #180D53 #281588 #381DBD #5337E0

Accessibility & contrast

On white

13.52

#281588 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#281588 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281588

13.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281588	#FFFFFF	#000000	##FFFFFF
##281588	1.00	13.52	1.55	13.52
#FFFFFF	13.52	1.00	21.00	1.00
#000000	1.55	21.00	1.00	21.00
##FFFFFF	13.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00338B

Deuteranopia (green-blind)

#002986

Tritanopia (blue-blind)

#003A50

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #281588;
/* rgb */ color: rgb(40, 21, 136);
/* oklch */ color: oklch(32.2% 0.174 277.8);

Tailwind

colors: {
  custom: {
    50: '#7257ac',
    500: '#281588',
    950: '#000000',
  },
}

SCSS

$custom: #281588;
$custom-light: #7257ac;
$custom-dark: #000000;

JSON

{
  "hex": "#281588",
  "rgb": {
    "r": 40,
    "g": 21,
    "b": 136
  },
  "hsl": {
    "h": 249.913,
    "s": 73.248,
    "l": 30.784
  },
  "oklch": {
    "l": 0.32183,
    "c": 0.17362,
    "h": 277.8
  },
  "luminance": 0.02765
}

Semantic roles & 50–950 ramp

primary

#281588

secondary

#A7BC3D

accent

#F038D2

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#090310

muted

#7B787F

Preview Lab

Preview with #281588

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

Preview Lab → · Contrast checker → · Palette generator →