#281F70#281F70

#281F70 is a dark, vivid blue. Relative luminance 0.026; OKLCH L 30.9% C 0.133 H 280.2°. Best body text is #FFFFFF at 13.81:1 contrast (WCAG AA passes).

Color values

HEX	#281F70
RGB	rgb(40, 31, 112)
HSL	hsl(247, 57%, 28%)
HSV	hsv(247, 72%, 44%)
CMYK	cmyk(64.3%, 72.3%, 0%, 56.1%)
CIE-LAB	lab(18.37, 29.87, -45.40)
CIE-LCH	lch(18.37, 54.35, 303.34°)
OKLab	oklab(30.9% 0.0237 -0.1309)
OKLCH	oklch(30.9% 0.133 280.2)
XYZ	xyz(4.2888, 2.6006, 15.6021)
Luminance	0.0260 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281F70 #67701F

analogous

#1F3E70 #281F70 #501F70

triadic

#281F70 #70281F #1F7028

tetradic

#281F70 #701F3E #67701F #1F7050

square

#281F70 #701F3E #67701F #1F7050

split-complementary

#281F70 #70501F #3E701F

monochromatic

#090718 #171240 #281F70 #392CA0 #4F3FCA

Accessibility & contrast

On white

13.81

#281F70 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.52

#281F70 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281F70

13.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281F70	#FFFFFF	#000000	##FFFFFF
##281F70	1.00	13.81	1.52	13.81
#FFFFFF	13.81	1.00	21.00	1.00
#000000	1.52	21.00	1.00	21.00
##FFFFFF	13.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003072

Deuteranopia (green-blind)

#002A6E

Tritanopia (blue-blind)

#003545

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #281f70;
/* rgb */ color: rgb(40, 31, 112);
/* oklch */ color: oklch(30.9% 0.133 280.2);

Tailwind

colors: {
  custom: {
    50: '#6c5c9a',
    500: '#281f70',
    950: '#000000',
  },
}

SCSS

$custom: #281f70;
$custom-light: #6c5c9a;
$custom-dark: #000000;

JSON

{
  "hex": "#281f70",
  "rgb": {
    "r": 40,
    "g": 31,
    "b": 112
  },
  "hsl": {
    "h": 246.667,
    "s": 56.643,
    "l": 28.039
  },
  "oklch": {
    "l": 0.30904,
    "c": 0.13299,
    "h": 280.2
  },
  "luminance": 0.02601
}

Semantic roles & 50–950 ramp

primary

#281F70

secondary

#9AA447

accent

#E048CF

background

#F6F5F9

surface

#ECE9F2

border

#C7C5CC

text

#07040E

muted

#7A797E

Preview Lab

Preview with #281F70

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

Preview Lab → · Contrast checker → · Palette generator →