#1E37A8#1E37A8

#1E37A8 is a dark, vivid blue. Relative luminance 0.058; OKLCH L 40.1% C 0.182 H 267.2°. Best body text is #FFFFFF at 9.69:1 contrast (WCAG AA passes).

Color values

HEX	#1E37A8
RGB	rgb(30, 55, 168)
HSL	hsl(229, 70%, 39%)
HSV	hsv(229, 82%, 66%)
CMYK	cmyk(82.1%, 67.3%, 0%, 34.1%)
CIE-LAB	lab(28.99, 33.69, -62.86)
CIE-LCH	lch(28.99, 71.32, 298.19°)
OKLab	oklab(40.11% -0.009 -0.1821)
OKLCH	oklch(40.11% 0.182 267.2)
XYZ	xyz(8.9670, 5.8345, 37.6918)
Luminance	0.0584 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1E37A8 #A88F1E

analogous

#1E7CA8 #1E37A8 #4A1EA8

triadic

#1E37A8 #A81E37 #37A81E

tetradic

#1E37A8 #A81E7C #A88F1E #1EA84A

square

#1E37A8 #A81E7C #A88F1E #1EA84A

split-complementary

#1E37A8 #A84A1E #7CA81E

monochromatic

#0B1540 #152674 #1E37A8 #2A4AD9 #5E76E2

Accessibility & contrast

On white

9.69

#1E37A8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.17

#1E37A8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1E37A8

9.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1E37A8	#FFFFFF	#000000	##FFFFFF
##1E37A8	1.00	9.69	2.17	9.69
#FFFFFF	9.69	1.00	21.00	1.00
#000000	2.17	21.00	1.00	21.00
##FFFFFF	9.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BAC

Deuteranopia (green-blind)

#003EA6

Tritanopia (blue-blind)

#00566A

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #1e37a8;
/* rgb */ color: rgb(30, 55, 168);
/* oklch */ color: oklch(40.1% 0.182 267.2);

Tailwind

colors: {
  custom: {
    50: '#746ec3',
    500: '#1e37a8',
    950: '#000000',
  },
}

SCSS

$custom: #1e37a8;
$custom-light: #746ec3;
$custom-dark: #000000;

JSON

{
  "hex": "#1e37a8",
  "rgb": {
    "r": 30,
    "g": 55,
    "b": 168
  },
  "hsl": {
    "h": 229.13,
    "s": 69.697,
    "l": 38.824
  },
  "oklch": {
    "l": 0.40114,
    "c": 0.1823,
    "h": 267.2
  },
  "luminance": 0.05836
}

Semantic roles & 50–950 ramp

primary

#1E37A8

secondary

#C7B35B

accent

#CC3BED

background

#F7F6FC

surface

#EEEBF8

border

#C9C6D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #1E37A8

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

Preview Lab → · Contrast checker → · Palette generator →