#1C387E#1C387E

#1C387E is a dark, vivid blue. Relative luminance 0.046; OKLCH L 36.4% C 0.124 H 264.5°. Best body text is #FFFFFF at 10.96:1 contrast (WCAG AA passes).

Color values

HEX	#1C387E
RGB	rgb(28, 56, 126)
HSL	hsl(223, 64%, 30%)
HSV	hsv(223, 78%, 49%)
CMYK	cmyk(77.8%, 55.6%, 0%, 50.6%)
CIE-LAB	lab(25.51, 16.32, -42.73)
CIE-LCH	lch(25.51, 45.74, 290.90°)
OKLab	oklab(36.36% -0.0118 -0.1231)
OKLCH	oklch(36.36% 0.124 264.5)
XYZ	xyz(5.6576, 4.5810, 20.3207)
Luminance	0.0458 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C387E #7E621C

analogous

#1C697E #1C387E #311C7E

triadic

#1C387E #7E1C38 #387E1C

tetradic

#1C387E #7E1C69 #7E621C #1C7E31

square

#1C387E #7E1C69 #7E621C #1C7E31

split-complementary

#1C387E #7E311C #697E1C

monochromatic

#060B1A #11224C #1C387E #274EB0 #406AD5

Accessibility & contrast

On white

10.96

#1C387E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.92

#1C387E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C387E

10.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C387E	#FFFFFF	#000000	##FFFFFF
##1C387E	1.00	10.96	1.92	10.96
#FFFFFF	10.96	1.00	21.00	1.00
#000000	1.92	21.00	1.00	21.00
##FFFFFF	10.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#024180

Deuteranopia (green-blind)

#00387D

Tritanopia (blue-blind)

#004955

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #1c387e;
/* rgb */ color: rgb(28, 56, 126);
/* oklch */ color: oklch(36.4% 0.124 264.5);

Tailwind

colors: {
  custom: {
    50: '#686ea4',
    500: '#1c387e',
    950: '#000000',
  },
}

SCSS

$custom: #1c387e;
$custom-light: #686ea4;
$custom-dark: #000000;

JSON

{
  "hex": "#1c387e",
  "rgb": {
    "r": 28,
    "g": 56,
    "b": 126
  },
  "hsl": {
    "h": 222.857,
    "s": 63.636,
    "l": 30.196
  },
  "oklch": {
    "l": 0.36364,
    "c": 0.12365,
    "h": 264.5
  },
  "luminance": 0.04582
}

Semantic roles & 50–950 ramp

primary

#1C387E

secondary

#B29244

accent

#B741E7

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #1C387E

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

Preview Lab → · Contrast checker → · Palette generator →