#1E3588#1E3588

#1E3588 is a dark, vivid blue. Relative luminance 0.046; OKLCH L 36.7% C 0.141 H 267.1°. Best body text is #FFFFFF at 10.94:1 contrast (WCAG AA passes).

Color values

HEX	#1E3588
RGB	rgb(30, 53, 136)
HSL	hsl(227, 64%, 33%)
HSV	hsv(227, 78%, 53%)
CMYK	cmyk(77.9%, 61%, 0%, 46.7%)
CIE-LAB	lab(25.56, 22.68, -48.90)
CIE-LCH	lch(25.56, 53.90, 294.89°)
OKLab	oklab(36.69% -0.0071 -0.1412)
OKLCH	oklch(36.69% 0.141 267.1)
XYZ	xyz(6.2509, 4.5991, 23.8461)
Luminance	0.0460 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1E3588 #88711E

analogous

#1E6A88 #1E3588 #3C1E88

triadic

#1E3588 #881E35 #35881E

tetradic

#1E3588 #881E6A #88711E #1E883C

square

#1E3588 #881E6A #88711E #1E883C

split-complementary

#1E3588 #883C1E #6A881E

monochromatic

#080E24 #132156 #1E3588 #2949BA #4968D7

Accessibility & contrast

On white

10.94

#1E3588 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.92

#1E3588 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1E3588

10.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1E3588	#FFFFFF	#000000	##FFFFFF
##1E3588	1.00	10.94	1.92	10.94
#FFFFFF	10.94	1.00	21.00	1.00
#000000	1.92	21.00	1.00	21.00
##FFFFFF	10.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00428B

Deuteranopia (green-blind)

#003886

Tritanopia (blue-blind)

#004A59

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #1e3588;
/* rgb */ color: rgb(30, 53, 136);
/* oklch */ color: oklch(36.7% 0.141 267.1);

Tailwind

colors: {
  custom: {
    50: '#6b6bab',
    500: '#1e3588',
    950: '#000000',
  },
}

SCSS

$custom: #1e3588;
$custom-light: #6b6bab;
$custom-dark: #000000;

JSON

{
  "hex": "#1e3588",
  "rgb": {
    "r": 30,
    "g": 53,
    "b": 136
  },
  "hsl": {
    "h": 226.981,
    "s": 63.855,
    "l": 32.549
  },
  "oklch": {
    "l": 0.36686,
    "c": 0.14141,
    "h": 267.1
  },
  "luminance": 0.046
}

Semantic roles & 50–950 ramp

primary

#1E3588

secondary

#B9A149

accent

#C341E7

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#080610

muted

#7A7A7F

Preview Lab

Preview with #1E3588

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

Preview Lab → · Contrast checker → · Palette generator →