#1E3188#1E3188

#1E3188 is a dark, vivid blue. Relative luminance 0.043; OKLCH L 35.9% C 0.147 H 268.3°. Best body text is #FFFFFF at 11.35:1 contrast (WCAG AA passes).

Color values

HEX	#1E3188
RGB	rgb(30, 49, 136)
HSL	hsl(229, 64%, 33%)
HSV	hsv(229, 78%, 53%)
CMYK	cmyk(77.9%, 64%, 0%, 46.7%)
CIE-LAB	lab(24.48, 25.44, -50.66)
CIE-LCH	lch(24.48, 56.69, 296.66°)
OKLab	oklab(35.88% -0.0043 -0.1465)
OKLCH	oklch(35.88% 0.147 268.3)
XYZ	xyz(6.0761, 4.2496, 23.7878)
Luminance	0.0425 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1E3188 #88751E

analogous

#1E6688 #1E3188 #401E88

triadic

#1E3188 #881E31 #31881E

tetradic

#1E3188 #881E66 #88751E #1E8840

square

#1E3188 #881E66 #88751E #1E8840

split-complementary

#1E3188 #88401E #66881E

monochromatic

#080D24 #131F56 #1E3188 #2943BA #4963D7

Accessibility & contrast

On white

11.35

#1E3188 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#1E3188 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1E3188

11.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1E3188	#FFFFFF	#000000	##FFFFFF
##1E3188	1.00	11.35	1.85	11.35
#FFFFFF	11.35	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003F8B

Deuteranopia (green-blind)

#003586

Tritanopia (blue-blind)

#004857

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #1e3188;
/* rgb */ color: rgb(30, 49, 136);
/* oklch */ color: oklch(35.9% 0.147 268.3);

Tailwind

colors: {
  custom: {
    50: '#6c68ac',
    500: '#1e3188',
    950: '#000000',
  },
}

SCSS

$custom: #1e3188;
$custom-light: #6c68ac;
$custom-dark: #000000;

JSON

{
  "hex": "#1e3188",
  "rgb": {
    "r": 30,
    "g": 49,
    "b": 136
  },
  "hsl": {
    "h": 229.245,
    "s": 63.855,
    "l": 32.549
  },
  "oklch": {
    "l": 0.35884,
    "c": 0.14652,
    "h": 268.3
  },
  "luminance": 0.0425
}

Semantic roles & 50–950 ramp

primary

#1E3188

secondary

#B9A549

accent

#C941E7

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080610

muted

#7B7A7F

Preview Lab

Preview with #1E3188

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

Preview Lab → · Contrast checker → · Palette generator →