#1C277E#1C277E

#1C277E is a dark, vivid blue. Relative luminance 0.032; OKLCH L 32.9% C 0.146 H 270.2°. Best body text is #FFFFFF at 12.80:1 contrast (WCAG AA passes).

Color values

HEX	#1C277E
RGB	rgb(28, 39, 126)
HSL	hsl(233, 64%, 30%)
HSV	hsv(233, 78%, 49%)
CMYK	cmyk(77.8%, 69%, 0%, 50.6%)
CIE-LAB	lab(20.84, 28.16, -50.34)
CIE-LCH	lch(20.84, 57.68, 299.22°)
OKLab	oklab(32.9% 0.0006 -0.1456)
OKLCH	oklch(32.9% 0.146 270.2)
XYZ	xyz(4.9690, 3.2037, 20.0911)
Luminance	0.0320 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C277E #7E731C

analogous

#1C587E #1C277E #421C7E

triadic

#1C277E #7E1C27 #277E1C

tetradic

#1C277E #7E1C58 #7E731C #1C7E42

square

#1C277E #7E1C58 #7E731C #1C7E42

split-complementary

#1C277E #7E421C #587E1C

monochromatic

#06081A #11184C #1C277E #2736B0 #4051D5

Accessibility & contrast

On white

12.80

#1C277E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.64

#1C277E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C277E

12.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C277E	#FFFFFF	#000000	##FFFFFF
##1C277E	1.00	12.80	1.64	12.80
#FFFFFF	12.80	1.00	21.00	1.00
#000000	1.64	21.00	1.00	21.00
##FFFFFF	12.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003781

Deuteranopia (green-blind)

#002E7C

Tritanopia (blue-blind)

#003E4F

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #1c277e;
/* rgb */ color: rgb(28, 39, 126);
/* oklch */ color: oklch(32.9% 0.146 270.2);

Tailwind

colors: {
  custom: {
    50: '#6961a4',
    500: '#1c277e',
    950: '#000000',
  },
}

SCSS

$custom: #1c277e;
$custom-light: #6961a4;
$custom-dark: #000000;

JSON

{
  "hex": "#1c277e",
  "rgb": {
    "r": 28,
    "g": 39,
    "b": 126
  },
  "hsl": {
    "h": 233.265,
    "s": 63.636,
    "l": 30.196
  },
  "oklch": {
    "l": 0.32895,
    "c": 0.14564,
    "h": 270.2
  },
  "luminance": 0.03204
}

Semantic roles & 50–950 ramp

primary

#1C277E

secondary

#B2A544

accent

#D441E7

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07050F

muted

#7A797F

Preview Lab

Preview with #1C277E

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

Preview Lab → · Contrast checker → · Palette generator →