#1C377C#1C377C

#1C377C is a dark, vivid blue. Relative luminance 0.044; OKLCH L 36.0% C 0.122 H 264.8°. Best body text is #FFFFFF at 11.13:1 contrast (WCAG AA passes).

Color values

HEX	#1C377C
RGB	rgb(28, 55, 124)
HSL	hsl(223, 63%, 30%)
HSV	hsv(223, 77%, 49%)
CMYK	cmyk(77.4%, 55.6%, 0%, 51.4%)
CIE-LAB	lab(25.06, 16.21, -42.20)
CIE-LCH	lch(25.06, 45.21, 291.02°)
OKLab	oklab(35.98% -0.0111 -0.1215)
OKLCH	oklch(35.98% 0.122 264.8)
XYZ	xyz(5.4819, 4.4339, 19.6318)
Luminance	0.0443 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C377C #7C611C

analogous

#1C677C #1C377C #311C7C

triadic

#1C377C #7C1C37 #377C1C

tetradic

#1C377C #7C1C67 #7C611C #1C7C31

square

#1C377C #7C1C67 #7C611C #1C7C31

split-complementary

#1C377C #7C311C #677C1C

monochromatic

#060B19 #11214A #1C377C #274DAE #3F69D4

Accessibility & contrast

On white

11.13

#1C377C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#1C377C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C377C

11.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C377C	#FFFFFF	#000000	##FFFFFF
##1C377C	1.00	11.13	1.89	11.13
#FFFFFF	11.13	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#02407E

Deuteranopia (green-blind)

#00377B

Tritanopia (blue-blind)

#004854

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #1c377c;
/* rgb */ color: rgb(28, 55, 124);
/* oklch */ color: oklch(36.0% 0.122 264.8);

Tailwind

colors: {
  custom: {
    50: '#676da2',
    500: '#1c377c',
    950: '#000000',
  },
}

SCSS

$custom: #1c377c;
$custom-light: #676da2;
$custom-dark: #000000;

JSON

{
  "hex": "#1c377c",
  "rgb": {
    "r": 28,
    "g": 55,
    "b": 124
  },
  "hsl": {
    "h": 223.125,
    "s": 63.158,
    "l": 29.804
  },
  "oklch": {
    "l": 0.35975,
    "c": 0.12206,
    "h": 264.8
  },
  "luminance": 0.04434
}

Semantic roles & 50–950 ramp

primary

#1C377C

secondary

#B09144

accent

#B842E6

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #1C377C

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

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