#1C3C8F#1C3C8F

#1C3C8F is a dark, vivid blue. Relative luminance 0.055; OKLCH L 38.7% C 0.143 H 264.6°. Best body text is #FFFFFF at 10.04:1 contrast (WCAG AA passes).

Color values

HEX	#1C3C8F
RGB	rgb(28, 60, 143)
HSL	hsl(223, 67%, 34%)
HSV	hsv(223, 80%, 56%)
CMYK	cmyk(80.4%, 58%, 0%, 43.9%)
CIE-LAB	lab(28.01, 20.39, -49.25)
CIE-LCH	lch(28.01, 53.30, 292.49°)
OKLab	oklab(38.68% -0.0135 -0.1422)
OKLCH	oklch(38.68% 0.143 264.6)
XYZ	xyz(7.0509, 5.4609, 26.6637)
Luminance	0.0546 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C3C8F #8F6F1C

analogous

#1C758F #1C3C8F #351C8F

triadic

#1C3C8F #8F1C3C #3C8F1C

tetradic

#1C3C8F #8F1C75 #8F6F1C #1C8F35

square

#1C3C8F #8F1C75 #8F6F1C #1C8F35

split-complementary

#1C3C8F #8F351C #758F1C

monochromatic

#081129 #12275C #1C3C8F #2651C2 #4A72DC

Accessibility & contrast

On white

10.04

#1C3C8F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#1C3C8F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C3C8F

10.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C3C8F	#FFFFFF	#000000	##FFFFFF
##1C3C8F	1.00	10.04	2.09	10.04
#FFFFFF	10.04	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004892

Deuteranopia (green-blind)

#003D8D

Tritanopia (blue-blind)

#00515F

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #1c3c8f;
/* rgb */ color: rgb(28, 60, 143);
/* oklch */ color: oklch(38.7% 0.143 264.6);

Tailwind

colors: {
  custom: {
    50: '#6c71b0',
    500: '#1c3c8f',
    950: '#000000',
  },
}

SCSS

$custom: #1c3c8f;
$custom-light: #6c71b0;
$custom-dark: #000000;

JSON

{
  "hex": "#1c3c8f",
  "rgb": {
    "r": 28,
    "g": 60,
    "b": 143
  },
  "hsl": {
    "h": 223.304,
    "s": 67.251,
    "l": 33.529
  },
  "oklch": {
    "l": 0.3868,
    "c": 0.14282,
    "h": 264.6
  },
  "luminance": 0.05462
}

Semantic roles & 50–950 ramp

primary

#1C3C8F

secondary

#BE9D49

accent

#BA3EEA

background

#F7F6FA

surface

#EDECF5

border

#C8C7CF

text

#080711

muted

#7B7A80

Preview Lab

Preview with #1C3C8F

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

Preview Lab → · Contrast checker → · Palette generator →