#1C3F87#1C3F87

#1C3F87 is a dark, vivid blue. Relative luminance 0.056; OKLCH L 38.7% C 0.128 H 262.5°. Best body text is #FFFFFF at 9.95:1 contrast (WCAG AA passes).

Color values

HEX	#1C3F87
RGB	rgb(28, 63, 135)
HSL	hsl(220, 66%, 32%)
HSV	hsv(220, 79%, 53%)
CMYK	cmyk(79.3%, 53.3%, 0%, 47.1%)
CIE-LAB	lab(28.25, 15.08, -43.91)
CIE-LCH	lch(28.25, 46.43, 288.95°)
OKLab	oklab(38.66% -0.0165 -0.1264)
OKLCH	oklch(38.66% 0.128 262.5)
XYZ	xyz(6.6280, 5.5504, 23.6390)
Luminance	0.0555 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C3F87 #87641C

analogous

#1C7587 #1C3F87 #2F1C87

triadic

#1C3F87 #871C3F #3F871C

tetradic

#1C3F87 #871C75 #87641C #1C872F

square

#1C3F87 #871C75 #87641C #1C872F

split-complementary

#1C3F87 #872F1C #75871C

monochromatic

#071022 #112754 #1C3F87 #2757BA #4575D8

Accessibility & contrast

On white

9.95

#1C3F87 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.11

#1C3F87 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C3F87

9.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C3F87	#FFFFFF	#000000	##FFFFFF
##1C3F87	1.00	9.95	2.11	9.95
#FFFFFF	9.95	1.00	21.00	1.00
#000000	2.11	21.00	1.00	21.00
##FFFFFF	9.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0E488A

Deuteranopia (green-blind)

#003E86

Tritanopia (blue-blind)

#00505C

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #1c3f87;
/* rgb */ color: rgb(28, 63, 135);
/* oklch */ color: oklch(38.7% 0.128 262.5);

Tailwind

colors: {
  custom: {
    50: '#6a73aa',
    500: '#1c3f87',
    950: '#000000',
  },
}

SCSS

$custom: #1c3f87;
$custom-light: #6a73aa;
$custom-dark: #000000;

JSON

{
  "hex": "#1c3f87",
  "rgb": {
    "r": 28,
    "g": 63,
    "b": 135
  },
  "hsl": {
    "h": 220.374,
    "s": 65.644,
    "l": 31.961
  },
  "oklch": {
    "l": 0.38664,
    "c": 0.12752,
    "h": 262.5
  },
  "luminance": 0.05551
}

Semantic roles & 50–950 ramp

primary

#1C3F87

secondary

#BA9445

accent

#B13FE9

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#070810

muted

#7A7B7F

Preview Lab

Preview with #1C3F87

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

Preview Lab → · Contrast checker → · Palette generator →