#1B367E#1B367E

#1B367E is a dark, vivid blue. Relative luminance 0.044; OKLCH L 35.9% C 0.127 H 265.0°. Best body text is #FFFFFF at 11.20:1 contrast (WCAG AA passes).

Color values

HEX	#1B367E
RGB	rgb(27, 54, 126)
HSL	hsl(224, 65%, 30%)
HSV	hsv(224, 79%, 49%)
CMYK	cmyk(78.6%, 57.1%, 0%, 50.6%)
CIE-LAB	lab(24.88, 17.60, -43.75)
CIE-LCH	lch(24.88, 47.16, 291.92°)
OKLab	oklab(35.88% -0.011 -0.1261)
OKLCH	oklch(35.88% 0.127 265)
XYZ	xyz(5.5357, 4.3771, 20.2877)
Luminance	0.0438 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B367E #7E631B

analogous

#1B687E #1B367E #311B7E

triadic

#1B367E #7E1B36 #367E1B

tetradic

#1B367E #7E1B68 #7E631B #1B7E31

square

#1B367E #7E1B68 #7E631B #1B7E31

split-complementary

#1B367E #7E311B #687E1B

monochromatic

#050B19 #10204C #1B367E #264CB0 #3E67D6

Accessibility & contrast

On white

11.20

#1B367E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#1B367E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B367E

11.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B367E	#FFFFFF	#000000	##FFFFFF
##1B367E	1.00	11.20	1.88	11.20
#FFFFFF	11.20	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004080

Deuteranopia (green-blind)

#00377D

Tritanopia (blue-blind)

#004854

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #1b367e;
/* rgb */ color: rgb(27, 54, 126);
/* oklch */ color: oklch(35.9% 0.127 265.0);

Tailwind

colors: {
  custom: {
    50: '#686ca4',
    500: '#1b367e',
    950: '#000000',
  },
}

SCSS

$custom: #1b367e;
$custom-light: #686ca4;
$custom-dark: #000000;

JSON

{
  "hex": "#1b367e",
  "rgb": {
    "r": 27,
    "g": 54,
    "b": 126
  },
  "hsl": {
    "h": 223.636,
    "s": 64.706,
    "l": 30
  },
  "oklch": {
    "l": 0.3588,
    "c": 0.12662,
    "h": 265
  },
  "luminance": 0.04378
}

Semantic roles & 50–950 ramp

primary

#1B367E

secondary

#B29443

accent

#BA40E8

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #1B367E

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

Preview Lab → · Contrast checker → · Palette generator →