#1E3788#1E3788

#1E3788 is a dark, vivid blue. Relative luminance 0.048; OKLCH L 37.1% C 0.139 H 266.4°. Best body text is #FFFFFF at 10.73:1 contrast (WCAG AA passes).

Color values

HEX	#1E3788
RGB	rgb(30, 55, 136)
HSL	hsl(226, 64%, 33%)
HSV	hsv(226, 78%, 53%)
CMYK	cmyk(77.9%, 59.6%, 0%, 46.7%)
CIE-LAB	lab(26.11, 21.29, -48.00)
CIE-LCH	lch(26.11, 52.51, 293.93°)
OKLab	oklab(37.1% -0.0086 -0.1385)
OKLCH	oklch(37.1% 0.139 266.4)
XYZ	xyz(6.3440, 4.7853, 23.8771)
Luminance	0.0479 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1E3788 #886F1E

analogous

#1E6C88 #1E3788 #3A1E88

triadic

#1E3788 #881E37 #37881E

tetradic

#1E3788 #881E6C #886F1E #1E883A

square

#1E3788 #881E6C #886F1E #1E883A

split-complementary

#1E3788 #883A1E #6C881E

monochromatic

#080E24 #132356 #1E3788 #294BBA #496BD7

Accessibility & contrast

On white

10.73

#1E3788 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.96

#1E3788 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1E3788

10.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1E3788	#FFFFFF	#000000	##FFFFFF
##1E3788	1.00	10.73	1.96	10.73
#FFFFFF	10.73	1.00	21.00	1.00
#000000	1.96	21.00	1.00	21.00
##FFFFFF	10.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00438B

Deuteranopia (green-blind)

#003986

Tritanopia (blue-blind)

#004B5A

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #1e3788;
/* rgb */ color: rgb(30, 55, 136);
/* oklch */ color: oklch(37.1% 0.139 266.4);

Tailwind

colors: {
  custom: {
    50: '#6b6dab',
    500: '#1e3788',
    950: '#000000',
  },
}

SCSS

$custom: #1e3788;
$custom-light: #6b6dab;
$custom-dark: #000000;

JSON

{
  "hex": "#1e3788",
  "rgb": {
    "r": 30,
    "g": 55,
    "b": 136
  },
  "hsl": {
    "h": 225.849,
    "s": 63.855,
    "l": 32.549
  },
  "oklch": {
    "l": 0.371,
    "c": 0.13882,
    "h": 266.4
  },
  "luminance": 0.04786
}

Semantic roles & 50–950 ramp

primary

#1E3788

secondary

#B99F49

accent

#C041E7

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#080710

muted

#7A7A7F

Preview Lab

Preview with #1E3788

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

Preview Lab → · Contrast checker → · Palette generator →