#1C277C#1C277C

#1C277C is a dark, vivid blue. Relative luminance 0.032; OKLCH L 32.7% C 0.143 H 270.3°. Best body text is #FFFFFF at 12.88:1 contrast (WCAG AA passes).

Color values

HEX	#1C277C
RGB	rgb(28, 39, 124)
HSL	hsl(233, 63%, 30%)
HSV	hsv(233, 77%, 49%)
CMYK	cmyk(77.4%, 68.5%, 0%, 51.4%)
CIE-LAB	lab(20.64, 27.39, -49.40)
CIE-LCH	lch(20.64, 56.48, 299.01°)
OKLab	oklab(32.69% 0.0008 -0.1429)
OKLCH	oklch(32.69% 0.143 270.3)
XYZ	xyz(4.8413, 3.1526, 19.4182)
Luminance	0.0315 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C277C #7C711C

analogous

#1C577C #1C277C #411C7C

triadic

#1C277C #7C1C27 #277C1C

tetradic

#1C277C #7C1C57 #7C711C #1C7C41

square

#1C277C #7C1C57 #7C711C #1C7C41

split-complementary

#1C277C #7C411C #577C1C

monochromatic

#060819 #11174A #1C277C #2737AE #3F50D4

Accessibility & contrast

On white

12.88

#1C277C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.63

#1C277C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C277C

12.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C277C	#FFFFFF	#000000	##FFFFFF
##1C277C	1.00	12.88	1.63	12.88
#FFFFFF	12.88	1.00	21.00	1.00
#000000	1.63	21.00	1.00	21.00
##FFFFFF	12.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00367F

Deuteranopia (green-blind)

#002D7A

Tritanopia (blue-blind)

#003E4E

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #1c277c;
/* rgb */ color: rgb(28, 39, 124);
/* oklch */ color: oklch(32.7% 0.143 270.3);

Tailwind

colors: {
  custom: {
    50: '#6961a3',
    500: '#1c277c',
    950: '#000000',
  },
}

SCSS

$custom: #1c277c;
$custom-light: #6961a3;
$custom-dark: #000000;

JSON

{
  "hex": "#1c277c",
  "rgb": {
    "r": 28,
    "g": 39,
    "b": 124
  },
  "hsl": {
    "h": 233.125,
    "s": 63.158,
    "l": 29.804
  },
  "oklch": {
    "l": 0.32691,
    "c": 0.14287,
    "h": 270.3
  },
  "luminance": 0.03153
}

Semantic roles & 50–950 ramp

primary

#1C277C

secondary

#B0A344

accent

#D342E6

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07050F

muted

#7A797F

Preview Lab

Preview with #1C277C

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

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