#281A8C#281A8C

#281A8C is a dark, vivid blue. Relative luminance 0.031; OKLCH L 33.2% C 0.174 H 276.7°. Best body text is #FFFFFF at 12.99:1 contrast (WCAG AA passes).

Color values

HEX	#281A8C
RGB	rgb(40, 26, 140)
HSL	hsl(247, 69%, 33%)
HSV	hsv(247, 81%, 55%)
CMYK	cmyk(71.4%, 81.4%, 0%, 45.1%)
CIE-LAB	lab(20.37, 42.05, -59.90)
CIE-LCH	lch(20.37, 73.18, 305.07°)
OKLab	oklab(33.22% 0.0202 -0.1731)
OKLCH	oklch(33.22% 0.174 276.7)
XYZ	xyz(5.9765, 3.0828, 25.0859)
Luminance	0.0308 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281A8C #7E8C1A

analogous

#1A458C #281A8C #611A8C

triadic

#281A8C #8C281A #1A8C28

tetradic

#281A8C #8C1A45 #7E8C1A #1A8C61

square

#281A8C #8C1A45 #7E8C1A #1A8C61

split-complementary

#281A8C #8C611A #458C1A

monochromatic

#0B0725 #191058 #281A8C #3724C0 #5744DC

Accessibility & contrast

On white

12.99

#281A8C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.62

#281A8C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281A8C

12.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281A8C	#FFFFFF	#000000	##FFFFFF
##281A8C	1.00	12.99	1.62	12.99
#FFFFFF	12.99	1.00	21.00	1.00
#000000	1.62	21.00	1.00	21.00
##FFFFFF	12.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00368F

Deuteranopia (green-blind)

#002C8A

Tritanopia (blue-blind)

#003D53

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #281a8c;
/* rgb */ color: rgb(40, 26, 140);
/* oklch */ color: oklch(33.2% 0.174 276.7);

Tailwind

colors: {
  custom: {
    50: '#735aaf',
    500: '#281a8c',
    950: '#000000',
  },
}

SCSS

$custom: #281a8c;
$custom-light: #735aaf;
$custom-dark: #000000;

JSON

{
  "hex": "#281a8c",
  "rgb": {
    "r": 40,
    "g": 26,
    "b": 140
  },
  "hsl": {
    "h": 247.368,
    "s": 68.675,
    "l": 32.549
  },
  "oklch": {
    "l": 0.3322,
    "c": 0.17429,
    "h": 276.7
  },
  "luminance": 0.03083
}

Semantic roles & 50–950 ramp

primary

#281A8C

secondary

#AFBE44

accent

#EC3CD6

background

#F7F5FA

surface

#EDE9F5

border

#C8C5CF

text

#090411

muted

#7B7980

Preview Lab

Preview with #281A8C

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

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