#1A3C87#1A3C87

#1A3C87 is a dark, vivid blue. Relative luminance 0.052; OKLCH L 37.9% C 0.132 H 263.2°. Best body text is #FFFFFF at 10.29:1 contrast (WCAG AA passes).

Color values

HEX	#1A3C87
RGB	rgb(26, 60, 135)
HSL	hsl(221, 68%, 32%)
HSV	hsv(221, 81%, 53%)
CMYK	cmyk(80.7%, 55.6%, 0%, 47.1%)
CIE-LAB	lab(27.30, 16.93, -45.46)
CIE-LCH	lch(27.30, 48.51, 290.43°)
OKLab	oklab(37.92% -0.0157 -0.1311)
OKLCH	oklch(37.92% 0.132 263.2)
XYZ	xyz(6.4135, 5.1999, 23.5826)
Luminance	0.0520 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A3C87 #87651A

analogous

#1A7387 #1A3C87 #2E1A87

triadic

#1A3C87 #871A3C #3C871A

tetradic

#1A3C87 #871A73 #87651A #1A872E

square

#1A3C87 #871A73 #87651A #1A872E

split-complementary

#1A3C87 #872E1A #73871A

monochromatic

#060E20 #102554 #1A3C87 #2453BA #4171DA

Accessibility & contrast

On white

10.29

#1A3C87 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.04

#1A3C87 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A3C87

10.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A3C87	#FFFFFF	#000000	##FFFFFF
##1A3C87	1.00	10.29	2.04	10.29
#FFFFFF	10.29	1.00	21.00	1.00
#000000	2.04	21.00	1.00	21.00
##FFFFFF	10.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00468A

Deuteranopia (green-blind)

#003C86

Tritanopia (blue-blind)

#004E5B

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #1a3c87;
/* rgb */ color: rgb(26, 60, 135);
/* oklch */ color: oklch(37.9% 0.132 263.2);

Tailwind

colors: {
  custom: {
    50: '#6971ab',
    500: '#1a3c87',
    950: '#000000',
  },
}

SCSS

$custom: #1a3c87;
$custom-light: #6971ab;
$custom-dark: #000000;

JSON

{
  "hex": "#1a3c87",
  "rgb": {
    "r": 26,
    "g": 60,
    "b": 135
  },
  "hsl": {
    "h": 221.284,
    "s": 67.702,
    "l": 31.569
  },
  "oklch": {
    "l": 0.3792,
    "c": 0.13201,
    "h": 263.2
  },
  "luminance": 0.05201
}

Semantic roles & 50–950 ramp

primary

#1A3C87

secondary

#BA9542

accent

#B53DEB

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#070710

muted

#7A7A7F

Preview Lab

Preview with #1A3C87

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

Preview Lab → · Contrast checker → · Palette generator →