#1C2871#1C2871

#1C2871 is a dark, vivid blue. Relative luminance 0.030; OKLCH L 31.8% C 0.126 H 270.3°. Best body text is #FFFFFF at 13.20:1 contrast (WCAG AA passes).

Color values

HEX	#1C2871
RGB	rgb(28, 40, 113)
HSL	hsl(232, 60%, 28%)
HSV	hsv(232, 75%, 44%)
CMYK	cmyk(75.2%, 64.6%, 0%, 55.7%)
CIE-LAB	lab(19.87, 22.41, -43.63)
CIE-LCH	lch(19.87, 49.05, 297.19°)
OKLab	oklab(31.8% 0.0007 -0.126)
OKLCH	oklch(31.8% 0.126 270.3)
XYZ	xyz(4.2173, 2.9563, 15.9679)
Luminance	0.0296 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C2871 #71651C

analogous

#1C5371 #1C2871 #3A1C71

triadic

#1C2871 #711C28 #28711C

tetradic

#1C2871 #711C53 #71651C #1C713A

square

#1C2871 #711C53 #71651C #1C713A

split-complementary

#1C2871 #713A1C #53711C

monochromatic

#060919 #101740 #1C2871 #2839A2 #394ECE

Accessibility & contrast

On white

13.20

#1C2871 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.59

#1C2871 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C2871

13.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C2871	#FFFFFF	#000000	##FFFFFF
##1C2871	1.00	13.20	1.59	13.20
#FFFFFF	13.20	1.00	21.00	1.00
#000000	1.59	21.00	1.00	21.00
##FFFFFF	13.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003473

Deuteranopia (green-blind)

#002C70

Tritanopia (blue-blind)

#003B48

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #1c2871;
/* rgb */ color: rgb(28, 40, 113);
/* oklch */ color: oklch(31.8% 0.126 270.3);

Tailwind

colors: {
  custom: {
    50: '#66619b',
    500: '#1c2871',
    950: '#000000',
  },
}

SCSS

$custom: #1c2871;
$custom-light: #66619b;
$custom-dark: #000000;

JSON

{
  "hex": "#1c2871",
  "rgb": {
    "r": 28,
    "g": 40,
    "b": 113
  },
  "hsl": {
    "h": 231.529,
    "s": 60.284,
    "l": 27.647
  },
  "oklch": {
    "l": 0.318,
    "c": 0.12597,
    "h": 270.3
  },
  "luminance": 0.02957
}

Semantic roles & 50–950 ramp

primary

#1C2871

secondary

#A69843

accent

#CD44E3

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06050E

muted

#7A797E

Preview Lab

Preview with #1C2871

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

Preview Lab → · Contrast checker → · Palette generator →