#1B137E#1B137E

#1B137E is a dark, vivid blue. Relative luminance 0.022; OKLCH L 29.8% C 0.166 H 273.0°. Best body text is #FFFFFF at 14.57:1 contrast (WCAG AA passes).

Color values

HEX	#1B137E
RGB	rgb(27, 19, 126)
HSL	hsl(244, 74%, 28%)
HSV	hsv(244, 85%, 49%)
CMYK	cmyk(78.6%, 84.9%, 0%, 50.6%)
CIE-LAB	lab(16.53, 40.00, -57.47)
CIE-LCH	lch(16.53, 70.02, 304.84°)
OKLab	oklab(29.81% 0.0086 -0.1662)
OKLCH	oklch(29.81% 0.166 273)
XYZ	xyz(4.4495, 2.2046, 19.9257)
Luminance	0.0221 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B137E #767E13

analogous

#13407E #1B137E #50137E

triadic

#1B137E #7E1B13 #137E1B

tetradic

#1B137E #7E1340 #767E13 #137E50

square

#1B137E #7E1340 #767E13 #137E50

split-complementary

#1B137E #7E5013 #407E13

monochromatic

#06041B #100B49 #1B137E #261BB3 #3A2CDF

Accessibility & contrast

On white

14.57

#1B137E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.44

#1B137E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B137E

14.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B137E	#FFFFFF	#000000	##FFFFFF
##1B137E	1.00	14.57	1.44	14.57
#FFFFFF	14.57	1.00	21.00	1.00
#000000	1.44	21.00	1.00	21.00
##FFFFFF	14.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002E81

Deuteranopia (green-blind)

#00247C

Tritanopia (blue-blind)

#00354A

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #1b137e;
/* rgb */ color: rgb(27, 19, 126);
/* oklch */ color: oklch(29.8% 0.166 273.0);

Tailwind

colors: {
  custom: {
    50: '#6b54a5',
    500: '#1b137e',
    950: '#000000',
  },
}

SCSS

$custom: #1b137e;
$custom-light: #6b54a5;
$custom-dark: #000000;

JSON

{
  "hex": "#1b137e",
  "rgb": {
    "r": 27,
    "g": 19,
    "b": 126
  },
  "hsl": {
    "h": 244.486,
    "s": 73.793,
    "l": 28.431
  },
  "oklch": {
    "l": 0.2981,
    "c": 0.16646,
    "h": 273
  },
  "luminance": 0.02205
}

Semantic roles & 50–950 ramp

primary

#1B137E

secondary

#AAB439

accent

#F037E3

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#08030F

muted

#7B787F

Preview Lab

Preview with #1B137E

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

Preview Lab → · Contrast checker → · Palette generator →