#1C1F8A#1C1F8A

#1C1F8A is a dark, vivid blue. Relative luminance 0.031; OKLCH L 32.9% C 0.170 H 271.0°. Best body text is #FFFFFF at 13.02:1 contrast (WCAG AA passes).

Color values

HEX	#1C1F8A
RGB	rgb(28, 31, 138)
HSL	hsl(238, 66%, 33%)
HSV	hsv(238, 80%, 54%)
CMYK	cmyk(79.7%, 77.5%, 0%, 45.9%)
CIE-LAB	lab(20.29, 37.62, -58.81)
CIE-LCH	lch(20.29, 69.82, 302.61°)
OKLab	oklab(32.88% 0.003 -0.1703)
OKLCH	oklch(32.88% 0.17 271)
XYZ	xyz(5.5548, 3.0612, 24.3379)
Luminance	0.0306 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C1F8A #8A871C

analogous

#1C568A #1C1F8A #501C8A

triadic

#1C1F8A #8A1C1F #1F8A1C

tetradic

#1C1F8A #8A1C56 #8A871C #1C8A50

square

#1C1F8A #8A1C56 #8A871C #1C8A50

split-complementary

#1C1F8A #8A501C #568A1C

monochromatic

#070824 #121457 #1C1F8A #262ABD #474BDA

Accessibility & contrast

On white

13.02

#1C1F8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.61

#1C1F8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C1F8A

13.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C1F8A	#FFFFFF	#000000	##FFFFFF
##1C1F8A	1.00	13.02	1.61	13.02
#FFFFFF	13.02	1.00	21.00	1.00
#000000	1.61	21.00	1.00	21.00
##FFFFFF	13.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00368D

Deuteranopia (green-blind)

#002B88

Tritanopia (blue-blind)

#003F53

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #1c1f8a;
/* rgb */ color: rgb(28, 31, 138);
/* oklch */ color: oklch(32.9% 0.170 271.0);

Tailwind

colors: {
  custom: {
    50: '#6d5cad',
    500: '#1c1f8a',
    950: '#000000',
  },
}

SCSS

$custom: #1c1f8a;
$custom-light: #6d5cad;
$custom-dark: #000000;

JSON

{
  "hex": "#1c1f8a",
  "rgb": {
    "r": 28,
    "g": 31,
    "b": 138
  },
  "hsl": {
    "h": 238.364,
    "s": 66.265,
    "l": 32.549
  },
  "oklch": {
    "l": 0.3288,
    "c": 0.17033,
    "h": 271
  },
  "luminance": 0.03062
}

Semantic roles & 50–950 ramp

primary

#1C1F8A

secondary

#BBB846

accent

#E53FE9

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080410

muted

#7B797F

Preview Lab

Preview with #1C1F8A

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

Preview Lab → · Contrast checker → · Palette generator →