#1E3571#1E3571

#1E3571 is a dark, moderate blue. Relative luminance 0.040; OKLCH L 34.7% C 0.108 H 265.4°. Best body text is #FFFFFF at 11.65:1 contrast (WCAG AA passes).

Color values

HEX	#1E3571
RGB	rgb(30, 53, 113)
HSL	hsl(223, 58%, 28%)
HSV	hsv(223, 73%, 44%)
CMYK	cmyk(73.5%, 53.1%, 0%, 55.7%)
CIE-LAB	lab(23.72, 13.47, -37.37)
CIE-LCH	lch(23.72, 39.72, 289.81°)
OKLab	oklab(34.72% -0.0087 -0.1073)
OKLCH	oklch(34.72% 0.108 265.4)
XYZ	xyz(4.7881, 4.0140, 16.1420)
Luminance	0.0401 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1E3571 #715A1E

analogous

#1E5E71 #1E3571 #301E71

triadic

#1E3571 #711E35 #35711E

tetradic

#1E3571 #711E5E #715A1E #1E7130

square

#1E3571 #711E5E #715A1E #1E7130

split-complementary

#1E3571 #71301E #5E711E

monochromatic

#060B18 #111E41 #1E3571 #2B4CA1 #3E65CC

Accessibility & contrast

On white

11.65

#1E3571 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.80

#1E3571 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1E3571

11.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1E3571	#FFFFFF	#000000	##FFFFFF
##1E3571	1.00	11.65	1.80	11.65
#FFFFFF	11.65	1.00	21.00	1.00
#000000	1.80	21.00	1.00	21.00
##FFFFFF	11.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#113C73

Deuteranopia (green-blind)

#003570

Tritanopia (blue-blind)

#00434D

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #1e3571;
/* rgb */ color: rgb(30, 53, 113);
/* oklch */ color: oklch(34.7% 0.108 265.4);

Tailwind

colors: {
  custom: {
    50: '#656b9a',
    500: '#1e3571',
    950: '#000000',
  },
}

SCSS

$custom: #1e3571;
$custom-light: #656b9a;
$custom-dark: #000000;

JSON

{
  "hex": "#1e3571",
  "rgb": {
    "r": 30,
    "g": 53,
    "b": 113
  },
  "hsl": {
    "h": 223.373,
    "s": 58.042,
    "l": 28.039
  },
  "oklch": {
    "l": 0.34718,
    "c": 0.10769,
    "h": 265.4
  },
  "luminance": 0.04014
}

Semantic roles & 50–950 ramp

primary

#1E3571

secondary

#A58B46

accent

#B647E1

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060E

muted

#7A7A7E

Preview Lab

Preview with #1E3571

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

Preview Lab → · Contrast checker → · Palette generator →