#1C3E8B#1C3E8B

#1C3E8B is a dark, vivid blue. Relative luminance 0.056; OKLCH L 38.8% C 0.135 H 263.5°. Best body text is #FFFFFF at 9.95:1 contrast (WCAG AA passes).

Color values

HEX	#1C3E8B
RGB	rgb(28, 62, 139)
HSL	hsl(222, 66%, 33%)
HSV	hsv(222, 80%, 55%)
CMYK	cmyk(79.9%, 55.4%, 0%, 45.5%)
CIE-LAB	lab(28.26, 17.39, -46.37)
CIE-LCH	lch(28.26, 49.52, 290.56°)
OKLab	oklab(38.77% -0.0153 -0.1337)
OKLCH	oklch(38.77% 0.135 263.5)
XYZ	xyz(6.8601, 5.5554, 25.1318)
Luminance	0.0556 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C3E8B #8B691C

analogous

#1C758B #1C3E8B #321C8B

triadic

#1C3E8B #8B1C3E #3E8B1C

tetradic

#1C3E8B #8B1C75 #8B691C #1C8B32

square

#1C3E8B #8B1C75 #8B691C #1C8B32

split-complementary

#1C3E8B #8B321C #758B1C

monochromatic

#071125 #122758 #1C3E8B #2655BE #4774DA

Accessibility & contrast

On white

9.95

#1C3E8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.11

#1C3E8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C3E8B

9.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C3E8B	#FFFFFF	#000000	##FFFFFF
##1C3E8B	1.00	9.95	2.11	9.95
#FFFFFF	9.95	1.00	21.00	1.00
#000000	2.11	21.00	1.00	21.00
##FFFFFF	9.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00488E

Deuteranopia (green-blind)

#003E89

Tritanopia (blue-blind)

#00515E

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #1c3e8b;
/* rgb */ color: rgb(28, 62, 139);
/* oklch */ color: oklch(38.8% 0.135 263.5);

Tailwind

colors: {
  custom: {
    50: '#6b72ad',
    500: '#1c3e8b',
    950: '#000000',
  },
}

SCSS

$custom: #1c3e8b;
$custom-light: #6b72ad;
$custom-dark: #000000;

JSON

{
  "hex": "#1c3e8b",
  "rgb": {
    "r": 28,
    "g": 62,
    "b": 139
  },
  "hsl": {
    "h": 221.622,
    "s": 66.467,
    "l": 32.745
  },
  "oklch": {
    "l": 0.38771,
    "c": 0.13456,
    "h": 263.5
  },
  "luminance": 0.05556
}

Semantic roles & 50–950 ramp

primary

#1C3E8B

secondary

#BC9847

accent

#B53EE9

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#080810

muted

#7A7B7F

Preview Lab

Preview with #1C3E8B

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

Preview Lab → · Contrast checker → · Palette generator →