#10278D#10278D

#10278D is a dark, vivid blue. Relative luminance 0.035; OKLCH L 34.0% C 0.169 H 266.2°. Best body text is #FFFFFF at 12.38:1 contrast (WCAG AA passes).

Color values

HEX	#10278D
RGB	rgb(16, 39, 141)
HSL	hsl(229, 80%, 31%)
HSV	hsv(229, 89%, 55%)
CMYK	cmyk(88.7%, 72.3%, 0%, 44.7%)
CIE-LAB	lab(21.89, 32.93, -58.06)
CIE-LCH	lch(21.89, 66.75, 299.56°)
OKLab	oklab(33.98% -0.0113 -0.1684)
OKLCH	oklch(33.98% 0.169 266.2)
XYZ	xyz(5.7452, 3.4836, 25.5637)
Luminance	0.0348 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#10278D #8D7610

analogous

#10658D #10278D #37108D

triadic

#10278D #8D1027 #278D10

tetradic

#10278D #8D1065 #8D7610 #108D37

square

#10278D #8D1065 #8D7610 #108D37

split-complementary

#10278D #8D3710 #658D10

monochromatic

#04091F #0A1856 #10278D #1636C4 #3052E7

Accessibility & contrast

On white

12.38

#10278D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.70

#10278D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10278D

12.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##10278D	#FFFFFF	#000000	##FFFFFF
##10278D	1.00	12.38	1.70	12.38
#FFFFFF	12.38	1.00	21.00	1.00
#000000	1.70	21.00	1.00	21.00
##FFFFFF	12.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003A90

Deuteranopia (green-blind)

#002E8B

Tritanopia (blue-blind)

#004457

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #10278d;
/* rgb */ color: rgb(16, 39, 141);
/* oklch */ color: oklch(34.0% 0.169 266.2);

Tailwind

colors: {
  custom: {
    50: '#6a61af',
    500: '#10278d',
    950: '#000000',
  },
}

SCSS

$custom: #10278d;
$custom-light: #6a61af;
$custom-dark: #000000;

JSON

{
  "hex": "#10278d",
  "rgb": {
    "r": 16,
    "g": 39,
    "b": 141
  },
  "hsl": {
    "h": 228.96,
    "s": 79.618,
    "l": 30.784
  },
  "oklch": {
    "l": 0.33978,
    "c": 0.16875,
    "h": 266.2
  },
  "luminance": 0.03484
}

Semantic roles & 50–950 ramp

primary

#10278D

secondary

#C2A837

accent

#D232F6

background

#F7F5FA

surface

#EDEAF5

border

#C8C6CF

text

#080511

muted

#7B7980

Preview Lab

Preview with #10278D

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

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