#281F58#281F58

#281F58 is a dark, moderate blue. Relative luminance 0.021; OKLCH L 28.6% C 0.099 H 285.6°. Best body text is #FFFFFF at 14.71:1 contrast (WCAG AA passes).

Color values

HEX	#281F58
RGB	rgb(40, 31, 88)
HSL	hsl(249, 48%, 23%)
HSV	hsv(249, 65%, 35%)
CMYK	cmyk(54.5%, 64.8%, 0%, 65.5%)
CIE-LAB	lab(16.18, 21.48, -33.15)
CIE-LCH	lch(16.18, 39.50, 302.94°)
OKLab	oklab(28.64% 0.0265 -0.0949)
OKLCH	oklch(28.64% 0.099 285.6)
XYZ	xyz(3.1260, 2.1355, 9.4781)
Luminance	0.0214 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281F58 #4F581F

analogous

#1F3258 #281F58 #441F58

triadic

#281F58 #58281F #1F5828

tetradic

#281F58 #581F32 #4F581F #1F5844

square

#281F58 #581F32 #4F581F #1F5844

split-complementary

#281F58 #58441F #32581F

monochromatic

#0A0817 #130F2B #281F58 #3D2F85 #513FB3

Accessibility & contrast

On white

14.71

#281F58 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.43

#281F58 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281F58

14.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281F58	#FFFFFF	#000000	##FFFFFF
##281F58	1.00	14.71	1.43	14.71
#FFFFFF	14.71	1.00	21.00	1.00
#000000	1.43	21.00	1.00	21.00
##FFFFFF	14.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002A5A

Deuteranopia (green-blind)

#002657

Tritanopia (blue-blind)

#162C38

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #281f58;
/* rgb */ color: rgb(40, 31, 88);
/* oklch */ color: oklch(28.6% 0.099 285.6);

Tailwind

colors: {
  custom: {
    50: '#675b88',
    500: '#281f58',
    950: '#000000',
  },
}

SCSS

$custom: #281f58;
$custom-light: #675b88;
$custom-dark: #000000;

JSON

{
  "hex": "#281f58",
  "rgb": {
    "r": 40,
    "g": 31,
    "b": 88
  },
  "hsl": {
    "h": 249.474,
    "s": 47.899,
    "l": 23.333
  },
  "oklch": {
    "l": 0.2864,
    "c": 0.09851,
    "h": 285.6
  },
  "luminance": 0.02136
}

Semantic roles & 50–950 ramp

primary

#281F58

secondary

#828D46

accent

#D750C2

background

#F6F5F8

surface

#EBE9F0

border

#C6C5CB

text

#06040B

muted

#7A797C

Preview Lab

Preview with #281F58

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

Preview Lab → · Contrast checker → · Palette generator →