#1C2159#1C2159

#1C2159 is a dark, moderate blue. Relative luminance 0.021; OKLCH L 28.1% C 0.100 H 274.2°. Best body text is #FFFFFF at 14.88:1 contrast (WCAG AA passes).

Color values

HEX	#1C2159
RGB	rgb(28, 33, 89)
HSL	hsl(235, 52%, 23%)
HSV	hsv(235, 69%, 35%)
CMYK	cmyk(68.5%, 62.9%, 0%, 65.1%)
CIE-LAB	lab(15.78, 17.92, -34.53)
CIE-LCH	lch(15.78, 38.90, 297.43°)
OKLab	oklab(28.1% 0.0073 -0.0993)
OKLCH	oklch(28.1% 0.1 274.2)
XYZ	xyz(2.8253, 2.0556, 9.6971)
Luminance	0.0206 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C2159 #59541C

analogous

#1C3F59 #1C2159 #351C59

triadic

#1C2159 #591C21 #21591C

tetradic

#1C2159 #591C3F #59541C #1C5935

square

#1C2159 #591C3F #59541C #1C5935

split-complementary

#1C2159 #59351C #3F591C

monochromatic

#070917 #0D102A #1C2159 #2B3288 #3944B6

Accessibility & contrast

On white

14.88

#1C2159 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.41

#1C2159 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C2159

14.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C2159	#FFFFFF	#000000	##FFFFFF
##1C2159	1.00	14.88	1.41	14.88
#FFFFFF	14.88	1.00	21.00	1.00
#000000	1.41	21.00	1.00	21.00
##FFFFFF	14.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002A5B

Deuteranopia (green-blind)

#002558

Tritanopia (blue-blind)

#002F39

Achromatopsia (no color)

#272727

Design tokens & code

CSS

--color: #1c2159;
/* rgb */ color: rgb(28, 33, 89);
/* oklch */ color: oklch(28.1% 0.100 274.2);

Tailwind

colors: {
  custom: {
    50: '#605c88',
    500: '#1c2159',
    950: '#000000',
  },
}

SCSS

$custom: #1c2159;
$custom-light: #605c88;
$custom-dark: #000000;

JSON

{
  "hex": "#1c2159",
  "rgb": {
    "r": 28,
    "g": 33,
    "b": 89
  },
  "hsl": {
    "h": 235.082,
    "s": 52.137,
    "l": 22.941
  },
  "oklch": {
    "l": 0.28103,
    "c": 0.09959,
    "h": 274.2
  },
  "luminance": 0.02056
}

Semantic roles & 50–950 ramp

primary

#1C2159

secondary

#8F8842

accent

#D04CDC

background

#F5F5F8

surface

#EAE9F0

border

#C6C5CB

text

#05040B

muted

#79797C

Preview Lab

Preview with #1C2159

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

Preview Lab → · Contrast checker → · Palette generator →