#281F5E#281F5E

#281F5E is a dark, moderate blue. Relative luminance 0.022; OKLCH L 29.2% C 0.107 H 284.0°. Best body text is #FFFFFF at 14.50:1 contrast (WCAG AA passes).

Color values

HEX	#281F5E
RGB	rgb(40, 31, 94)
HSL	hsl(249, 50%, 25%)
HSV	hsv(249, 67%, 37%)
CMYK	cmyk(57.4%, 67%, 0%, 63.1%)
CIE-LAB	lab(16.70, 23.57, -36.33)
CIE-LCH	lch(16.70, 43.31, 302.98°)
OKLab	oklab(29.18% 0.0261 -0.1042)
OKLCH	oklch(29.18% 0.107 284)
XYZ	xyz(3.3848, 2.2391, 10.8413)
Luminance	0.0224 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281F5E #555E1F

analogous

#1F365E #281F5E #481F5E

triadic

#281F5E #5E281F #1F5E28

tetradic

#281F5E #5E1F36 #555E1F #1F5E48

square

#281F5E #5E1F36 #555E1F #1F5E48

split-complementary

#281F5E #5E481F #365E1F

monochromatic

#0A0817 #141030 #281F5E #3C2E8C #4F3DBA

Accessibility & contrast

On white

14.50

#281F5E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.45

#281F5E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281F5E

14.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281F5E	#FFFFFF	#000000	##FFFFFF
##281F5E	1.00	14.50	1.45	14.50
#FFFFFF	14.50	1.00	21.00	1.00
#000000	1.45	21.00	1.00	21.00
##FFFFFF	14.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002B60

Deuteranopia (green-blind)

#00275D

Tritanopia (blue-blind)

#112E3B

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #281f5e;
/* rgb */ color: rgb(40, 31, 94);
/* oklch */ color: oklch(29.2% 0.107 284.0);

Tailwind

colors: {
  custom: {
    50: '#685b8c',
    500: '#281f5e',
    950: '#000000',
  },
}

SCSS

$custom: #281f5e;
$custom-light: #685b8c;
$custom-dark: #000000;

JSON

{
  "hex": "#281f5e",
  "rgb": {
    "r": 40,
    "g": 31,
    "b": 94
  },
  "hsl": {
    "h": 248.571,
    "s": 50.4,
    "l": 24.51
  },
  "oklch": {
    "l": 0.29175,
    "c": 0.10745,
    "h": 284
  },
  "luminance": 0.02239
}

Semantic roles & 50–950 ramp

primary

#281F5E

secondary

#889346

accent

#DA4EC6

background

#F6F5F8

surface

#EBE9F0

border

#C6C5CB

text

#06040C

muted

#7A797D

Preview Lab

Preview with #281F5E

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

Preview Lab → · Contrast checker → · Palette generator →