#1E376B#1E376B

#1E376B is a dark, moderate blue. Relative luminance 0.041; OKLCH L 34.7% C 0.096 H 263.0°. Best body text is #FFFFFF at 11.58:1 contrast (WCAG AA passes).

Color values

HEX	#1E376B
RGB	rgb(30, 55, 107)
HSL	hsl(221, 56%, 27%)
HSV	hsv(221, 72%, 42%)
CMYK	cmyk(72%, 48.6%, 0%, 58%)
CIE-LAB	lab(23.90, 9.63, -33.23)
CIE-LCH	lch(23.90, 34.59, 286.16°)
OKLab	oklab(34.72% -0.0116 -0.0951)
OKLCH	oklch(34.72% 0.096 263)
XYZ	xyz(4.5545, 4.0695, 14.4525)
Luminance	0.0407 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1E376B #6B521E

analogous

#1E5E6B #1E376B #2B1E6B

triadic

#1E376B #6B1E37 #376B1E

tetradic

#1E376B #6B1E5E #6B521E #1E6B2B

square

#1E376B #6B1E5E #6B521E #1E6B2B

split-complementary

#1E376B #6B2B1E #5E6B1E

monochromatic

#070C18 #111E3B #1E376B #2B509B #3B69C8

Accessibility & contrast

On white

11.58

#1E376B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#1E376B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1E376B

11.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1E376B	#FFFFFF	#000000	##FFFFFF
##1E376B	1.00	11.58	1.81	11.58
#FFFFFF	11.58	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1D3D6D

Deuteranopia (green-blind)

#0D366A

Tritanopia (blue-blind)

#00434B

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #1e376b;
/* rgb */ color: rgb(30, 55, 107);
/* oklch */ color: oklch(34.7% 0.096 263.0);

Tailwind

colors: {
  custom: {
    50: '#646d96',
    500: '#1e376b',
    950: '#000000',
  },
}

SCSS

$custom: #1e376b;
$custom-light: #646d96;
$custom-dark: #000000;

JSON

{
  "hex": "#1e376b",
  "rgb": {
    "r": 30,
    "g": 55,
    "b": 107
  },
  "hsl": {
    "h": 220.519,
    "s": 56.204,
    "l": 26.863
  },
  "oklch": {
    "l": 0.34719,
    "c": 0.09582,
    "h": 263
  },
  "luminance": 0.0407
}

Semantic roles & 50–950 ramp

primary

#1E376B

secondary

#9F8245

accent

#AE48DF

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06070D

muted

#7A7A7E

Preview Lab

Preview with #1E376B

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

Preview Lab → · Contrast checker → · Palette generator →