#1B427E#1B427E

#1B427E is a dark, moderate blue. Relative luminance 0.056; OKLCH L 38.6% C 0.111 H 259.0°. Best body text is #FFFFFF at 9.87:1 contrast (WCAG AA passes).

Color values

HEX	#1B427E
RGB	rgb(27, 66, 126)
HSL	hsl(216, 65%, 30%)
HSV	hsv(216, 79%, 49%)
CMYK	cmyk(78.6%, 47.6%, 0%, 50.6%)
CIE-LAB	lab(28.47, 9.20, -37.95)
CIE-LCH	lch(28.47, 39.05, 283.63°)
OKLab	oklab(38.62% -0.0213 -0.1088)
OKLCH	oklch(38.62% 0.111 259)
XYZ	xyz(6.1647, 5.6351, 20.4974)
Luminance	0.0564 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B427E #7E571B

analogous

#1B737E #1B427E #261B7E

triadic

#1B427E #7E1B42 #427E1B

tetradic

#1B427E #7E1B73 #7E571B #1B7E26

square

#1B427E #7E1B73 #7E571B #1B7E26

split-complementary

#1B427E #7E261B #737E1B

monochromatic

#050D19 #10284C #1B427E #265CB0 #3E7AD6

Accessibility & contrast

On white

9.87

#1B427E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.13

#1B427E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B427E

9.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B427E	#FFFFFF	#000000	##FFFFFF
##1B427E	1.00	9.87	2.13	9.87
#FFFFFF	9.87	1.00	21.00	1.00
#000000	2.13	21.00	1.00	21.00
##FFFFFF	9.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#224880

Deuteranopia (green-blind)

#0B3F7D

Tritanopia (blue-blind)

#00505A

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #1b427e;
/* rgb */ color: rgb(27, 66, 126);
/* oklch */ color: oklch(38.6% 0.111 259.0);

Tailwind

colors: {
  custom: {
    50: '#6775a4',
    500: '#1b427e',
    950: '#000000',
  },
}

SCSS

$custom: #1b427e;
$custom-light: #6775a4;
$custom-dark: #000000;

JSON

{
  "hex": "#1b427e",
  "rgb": {
    "r": 27,
    "g": 66,
    "b": 126
  },
  "hsl": {
    "h": 216.364,
    "s": 64.706,
    "l": 30
  },
  "oklch": {
    "l": 0.3862,
    "c": 0.1109,
    "h": 259
  },
  "luminance": 0.05636
}

Semantic roles & 50–950 ramp

primary

#1B427E

secondary

#B28643

accent

#A640E8

background

#F6F7FA

surface

#EBEDF4

border

#C6C8CE

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #1B427E

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

Preview Lab → · Contrast checker → · Palette generator →