#1C277D#1C277D

#1C277D is a dark, vivid blue. Relative luminance 0.032; OKLCH L 32.8% C 0.144 H 270.3°. Best body text is #FFFFFF at 12.84:1 contrast (WCAG AA passes).

Color values

HEX	#1C277D
RGB	rgb(28, 39, 125)
HSL	hsl(233, 63%, 30%)
HSV	hsv(233, 78%, 49%)
CMYK	cmyk(77.6%, 68.8%, 0%, 51%)
CIE-LAB	lab(20.74, 27.77, -49.87)
CIE-LCH	lch(20.74, 57.08, 299.11°)
OKLab	oklab(32.79% 0.0007 -0.1443)
OKLCH	oklch(32.79% 0.144 270.3)
XYZ	xyz(4.9048, 3.1781, 19.7530)
Luminance	0.0318 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C277D #7D721C

analogous

#1C577D #1C277D #421C7D

triadic

#1C277D #7D1C27 #277D1C

tetradic

#1C277D #7D1C57 #7D721C #1C7D42

square

#1C277D #7D1C57 #7D721C #1C7D42

split-complementary

#1C277D #7D421C #577D1C

monochromatic

#060819 #11174B #1C277D #2737AF #3F50D4

Accessibility & contrast

On white

12.84

#1C277D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.64

#1C277D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C277D

12.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C277D	#FFFFFF	#000000	##FFFFFF
##1C277D	1.00	12.84	1.64	12.84
#FFFFFF	12.84	1.00	21.00	1.00
#000000	1.64	21.00	1.00	21.00
##FFFFFF	12.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003780

Deuteranopia (green-blind)

#002D7B

Tritanopia (blue-blind)

#003E4E

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #1c277d;
/* rgb */ color: rgb(28, 39, 125);
/* oklch */ color: oklch(32.8% 0.144 270.3);

Tailwind

colors: {
  custom: {
    50: '#6961a4',
    500: '#1c277d',
    950: '#000000',
  },
}

SCSS

$custom: #1c277d;
$custom-light: #6961a4;
$custom-dark: #000000;

JSON

{
  "hex": "#1c277d",
  "rgb": {
    "r": 28,
    "g": 39,
    "b": 125
  },
  "hsl": {
    "h": 233.196,
    "s": 63.399,
    "l": 30
  },
  "oklch": {
    "l": 0.32793,
    "c": 0.14426,
    "h": 270.3
  },
  "luminance": 0.03179
}

Semantic roles & 50–950 ramp

primary

#1C277D

secondary

#B1A444

accent

#D441E6

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07050F

muted

#7A797F

Preview Lab

Preview with #1C277D

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

Preview Lab → · Contrast checker → · Palette generator →