#1C3371#1C3371

#1C3371 is a dark, moderate blue. Relative luminance 0.038; OKLCH L 34.2% C 0.111 H 265.5°. Best body text is #FFFFFF at 11.92:1 contrast (WCAG AA passes).

Color values

HEX	#1C3371
RGB	rgb(28, 51, 113)
HSL	hsl(224, 60%, 28%)
HSV	hsv(224, 75%, 44%)
CMYK	cmyk(75.2%, 54.9%, 0%, 55.7%)
CIE-LAB	lab(23.02, 14.58, -38.50)
CIE-LCH	lch(23.02, 41.17, 290.74°)
OKLab	oklab(34.16% -0.0087 -0.1107)
OKLCH	oklch(34.16% 0.111 265.5)
XYZ	xyz(4.6423, 3.8063, 16.1096)
Luminance	0.0381 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C3371 #715A1C

analogous

#1C5D71 #1C3371 #301C71

triadic

#1C3371 #711C33 #33711C

tetradic

#1C3371 #711C5D #715A1C #1C7130

square

#1C3371 #711C5D #715A1C #1C7130

split-complementary

#1C3371 #71301C #5D711C

monochromatic

#060B19 #101D40 #1C3371 #2849A2 #3962CE

Accessibility & contrast

On white

11.92

#1C3371 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.76

#1C3371 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C3371

11.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C3371	#FFFFFF	#000000	##FFFFFF
##1C3371	1.00	11.92	1.76	11.92
#FFFFFF	11.92	1.00	21.00	1.00
#000000	1.76	21.00	1.00	21.00
##FFFFFF	11.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#093B73

Deuteranopia (green-blind)

#003370

Tritanopia (blue-blind)

#00424C

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #1c3371;
/* rgb */ color: rgb(28, 51, 113);
/* oklch */ color: oklch(34.2% 0.111 265.5);

Tailwind

colors: {
  custom: {
    50: '#656a9a',
    500: '#1c3371',
    950: '#000000',
  },
}

SCSS

$custom: #1c3371;
$custom-light: #656a9a;
$custom-dark: #000000;

JSON

{
  "hex": "#1c3371",
  "rgb": {
    "r": 28,
    "g": 51,
    "b": 113
  },
  "hsl": {
    "h": 223.765,
    "s": 60.284,
    "l": 27.647
  },
  "oklch": {
    "l": 0.34161,
    "c": 0.11109,
    "h": 265.5
  },
  "luminance": 0.03807
}

Semantic roles & 50–950 ramp

primary

#1C3371

secondary

#A68B43

accent

#B844E3

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060E

muted

#7A7A7E

Preview Lab

Preview with #1C3371

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

Preview Lab → · Contrast checker → · Palette generator →