#1C2371#1C2371

#1C2371 is a dark, vivid blue. Relative luminance 0.026; OKLCH L 30.8% C 0.132 H 271.9°. Best body text is #FFFFFF at 13.74:1 contrast (WCAG AA passes).

Color values

HEX	#1C2371
RGB	rgb(28, 35, 113)
HSL	hsl(235, 60%, 28%)
HSV	hsv(235, 75%, 44%)
CMYK	cmyk(75.2%, 69%, 0%, 55.7%)
CIE-LAB	lab(18.54, 25.88, -45.80)
CIE-LCH	lch(18.54, 52.60, 299.47°)
OKLab	oklab(30.83% 0.0044 -0.1324)
OKLCH	oklch(30.83% 0.132 271.9)
XYZ	xyz(4.0596, 2.6408, 15.9154)
Luminance	0.0264 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C2371 #716A1C

analogous

#1C4D71 #1C2371 #401C71

triadic

#1C2371 #711C23 #23711C

tetradic

#1C2371 #711C4D #716A1C #1C7140

square

#1C2371 #711C4D #716A1C #1C7140

split-complementary

#1C2371 #71401C #4D711C

monochromatic

#060819 #101440 #1C2371 #2832A2 #3946CE

Accessibility & contrast

On white

13.74

#1C2371 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#1C2371 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C2371

13.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C2371	#FFFFFF	#000000	##FFFFFF
##1C2371	1.00	13.74	1.53	13.74
#FFFFFF	13.74	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003173

Deuteranopia (green-blind)

#002970

Tritanopia (blue-blind)

#003846

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #1c2371;
/* rgb */ color: rgb(28, 35, 113);
/* oklch */ color: oklch(30.8% 0.132 271.9);

Tailwind

colors: {
  custom: {
    50: '#665e9b',
    500: '#1c2371',
    950: '#000000',
  },
}

SCSS

$custom: #1c2371;
$custom-light: #665e9b;
$custom-dark: #000000;

JSON

{
  "hex": "#1c2371",
  "rgb": {
    "r": 28,
    "g": 35,
    "b": 113
  },
  "hsl": {
    "h": 235.059,
    "s": 60.284,
    "l": 27.647
  },
  "oklch": {
    "l": 0.30828,
    "c": 0.13243,
    "h": 271.9
  },
  "luminance": 0.02641
}

Semantic roles & 50–950 ramp

primary

#1C2371

secondary

#A69D43

accent

#D644E3

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07040E

muted

#7A797E

Preview Lab

Preview with #1C2371

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

Preview Lab → · Contrast checker → · Palette generator →