#1C2181#1C2181

#1C2181 is a dark, vivid blue. Relative luminance 0.029; OKLCH L 32.2% C 0.157 H 271.3°. Best body text is #FFFFFF at 13.26:1 contrast (WCAG AA passes).

Color values

HEX	#1C2181
RGB	rgb(28, 33, 129)
HSL	hsl(237, 64%, 31%)
HSV	hsv(237, 78%, 51%)
CMYK	cmyk(78.3%, 74.4%, 0%, 49.4%)
CIE-LAB	lab(19.72, 33.20, -54.09)
CIE-LCH	lch(19.72, 63.47, 301.54°)
OKLab	oklab(32.18% 0.0036 -0.1566)
OKLCH	oklch(32.18% 0.157 271.3)
XYZ	xyz(4.9839, 2.9190, 21.0654)
Luminance	0.0292 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C2181 #817C1C

analogous

#1C5381 #1C2181 #491C81

triadic

#1C2181 #811C21 #21811C

tetradic

#1C2181 #811C53 #817C1C #1C8149

square

#1C2181 #811C53 #817C1C #1C8149

split-complementary

#1C2181 #81491C #53811C

monochromatic

#06071C #11144F #1C2181 #272EB3 #4249D6

Accessibility & contrast

On white

13.26

#1C2181 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.58

#1C2181 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C2181

13.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C2181	#FFFFFF	#000000	##FFFFFF
##1C2181	1.00	13.26	1.58	13.26
#FFFFFF	13.26	1.00	21.00	1.00
#000000	1.58	21.00	1.00	21.00
##FFFFFF	13.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003584

Deuteranopia (green-blind)

#002B7F

Tritanopia (blue-blind)

#003C4F

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #1c2181;
/* rgb */ color: rgb(28, 33, 129);
/* oklch */ color: oklch(32.2% 0.157 271.3);

Tailwind

colors: {
  custom: {
    50: '#6b5da7',
    500: '#1c2181',
    950: '#000000',
  },
}

SCSS

$custom: #1c2181;
$custom-light: #6b5da7;
$custom-dark: #000000;

JSON

{
  "hex": "#1c2181",
  "rgb": {
    "r": 28,
    "g": 33,
    "b": 129
  },
  "hsl": {
    "h": 237.03,
    "s": 64.331,
    "l": 30.784
  },
  "oklch": {
    "l": 0.32176,
    "c": 0.15663,
    "h": 271.3
  },
  "luminance": 0.0292
}

Semantic roles & 50–950 ramp

primary

#1C2181

secondary

#B4AF44

accent

#DF40E7

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#080410

muted

#7A797F

Preview Lab

Preview with #1C2181

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

Preview Lab → · Contrast checker → · Palette generator →