#1A3788#1A3788

#1A3788 is a dark, vivid blue. Relative luminance 0.047; OKLCH L 36.9% C 0.140 H 265.1°. Best body text is #FFFFFF at 10.79:1 contrast (WCAG AA passes).

Color values

HEX	#1A3788
RGB	rgb(26, 55, 136)
HSL	hsl(224, 68%, 32%)
HSV	hsv(224, 81%, 53%)
CMYK	cmyk(80.9%, 59.6%, 0%, 46.7%)
CIE-LAB	lab(25.95, 20.84, -48.27)
CIE-LCH	lch(25.95, 52.58, 293.35°)
OKLab	oklab(36.93% -0.0119 -0.1394)
OKLCH	oklch(36.93% 0.14 265.1)
XYZ	xyz(6.2346, 4.7288, 23.8720)
Luminance	0.0473 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1A3788 #886B1A

analogous

#1A6E88 #1A3788 #341A88

triadic

#1A3788 #881A37 #37881A

tetradic

#1A3788 #881A6E #886B1A #1A8834

square

#1A3788 #881A6E #886B1A #1A8834

split-complementary

#1A3788 #88341A #6E881A

monochromatic

#060D21 #102255 #1A3788 #244CBB #426ADB

Accessibility & contrast

On white

10.79

#1A3788 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.95

#1A3788 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1A3788

10.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1A3788	#FFFFFF	#000000	##FFFFFF
##1A3788	1.00	10.79	1.95	10.79
#FFFFFF	10.79	1.00	21.00	1.00
#000000	1.95	21.00	1.00	21.00
##FFFFFF	10.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00438B

Deuteranopia (green-blind)

#003986

Tritanopia (blue-blind)

#004B5A

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #1a3788;
/* rgb */ color: rgb(26, 55, 136);
/* oklch */ color: oklch(36.9% 0.140 265.1);

Tailwind

colors: {
  custom: {
    50: '#6a6dab',
    500: '#1a3788',
    950: '#000000',
  },
}

SCSS

$custom: #1a3788;
$custom-light: #6a6dab;
$custom-dark: #000000;

JSON

{
  "hex": "#1a3788",
  "rgb": {
    "r": 26,
    "g": 55,
    "b": 136
  },
  "hsl": {
    "h": 224.182,
    "s": 67.901,
    "l": 31.765
  },
  "oklch": {
    "l": 0.36929,
    "c": 0.13995,
    "h": 265.1
  },
  "luminance": 0.0473
}

Semantic roles & 50–950 ramp

primary

#1A3788

secondary

#BB9B43

accent

#BD3DEB

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#070710

muted

#7A7A7F

Preview Lab

Preview with #1A3788

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

Preview Lab → · Contrast checker → · Palette generator →