#1C277F#1C277F

#1C277F is a dark, vivid blue. Relative luminance 0.032; OKLCH L 33.0% C 0.147 H 270.2°. Best body text is #FFFFFF at 12.76:1 contrast (WCAG AA passes).

Color values

HEX	#1C277F
RGB	rgb(28, 39, 127)
HSL	hsl(233, 64%, 30%)
HSV	hsv(233, 78%, 50%)
CMYK	cmyk(78%, 69.3%, 0%, 50.2%)
CIE-LAB	lab(20.94, 28.54, -50.81)
CIE-LCH	lch(20.94, 58.28, 299.32°)
OKLab	oklab(33% 0.0005 -0.147)
OKLCH	oklch(33% 0.147 270.2)
XYZ	xyz(5.0339, 3.2297, 20.4327)
Luminance	0.0323 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C277F #7F741C

analogous

#1C597F #1C277F #421C7F

triadic

#1C277F #7F1C27 #277F1C

tetradic

#1C277F #7F1C59 #7F741C #1C7F42

square

#1C277F #7F1C59 #7F741C #1C7F42

split-complementary

#1C277F #7F421C #597F1C

monochromatic

#06081B #11184D #1C277F #2736B1 #4051D5

Accessibility & contrast

On white

12.76

#1C277F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.65

#1C277F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C277F

12.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C277F	#FFFFFF	#000000	##FFFFFF
##1C277F	1.00	12.76	1.65	12.76
#FFFFFF	12.76	1.00	21.00	1.00
#000000	1.65	21.00	1.00	21.00
##FFFFFF	12.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003782

Deuteranopia (green-blind)

#002E7D

Tritanopia (blue-blind)

#003F4F

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #1c277f;
/* rgb */ color: rgb(28, 39, 127);
/* oklch */ color: oklch(33.0% 0.147 270.2);

Tailwind

colors: {
  custom: {
    50: '#6961a5',
    500: '#1c277f',
    950: '#000000',
  },
}

SCSS

$custom: #1c277f;
$custom-light: #6961a5;
$custom-dark: #000000;

JSON

{
  "hex": "#1c277f",
  "rgb": {
    "r": 28,
    "g": 39,
    "b": 127
  },
  "hsl": {
    "h": 233.333,
    "s": 63.871,
    "l": 30.392
  },
  "oklch": {
    "l": 0.32998,
    "c": 0.14701,
    "h": 270.2
  },
  "luminance": 0.0323
}

Semantic roles & 50–950 ramp

primary

#1C277F

secondary

#B3A644

accent

#D441E7

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07050F

muted

#7A797F

Preview Lab

Preview with #1C277F

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

Preview Lab → · Contrast checker → · Palette generator →