#1B3E7E#1B3E7E

#1B3E7E is a dark, moderate blue. Relative luminance 0.052; OKLCH L 37.7% C 0.116 H 261.2°. Best body text is #FFFFFF at 10.31:1 contrast (WCAG AA passes).

Color values

HEX	#1B3E7E
RGB	rgb(27, 62, 126)
HSL	hsl(219, 65%, 30%)
HSV	hsv(219, 79%, 49%)
CMYK	cmyk(78.6%, 50.8%, 0%, 50.6%)
CIE-LAB	lab(27.25, 11.98, -39.91)
CIE-LCH	lch(27.25, 41.67, 286.71°)
OKLab	oklab(37.68% -0.0177 -0.1147)
OKLCH	oklch(37.68% 0.116 261.2)
XYZ	xyz(5.9392, 5.1839, 20.4222)
Luminance	0.0519 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B3E7E #7E5B1B

analogous

#1B6F7E #1B3E7E #2A1B7E

triadic

#1B3E7E #7E1B3E #3E7E1B

tetradic

#1B3E7E #7E1B6F #7E5B1B #1B7E2A

square

#1B3E7E #7E1B6F #7E5B1B #1B7E2A

split-complementary

#1B3E7E #7E2A1B #6F7E1B

monochromatic

#050C19 #10254C #1B3E7E #2657B0 #3E73D6

Accessibility & contrast

On white

10.31

#1B3E7E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.04

#1B3E7E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3E7E

10.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B3E7E	#FFFFFF	#000000	##FFFFFF
##1B3E7E	1.00	10.31	2.04	10.31
#FFFFFF	10.31	1.00	21.00	1.00
#000000	2.04	21.00	1.00	21.00
##FFFFFF	10.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#194580

Deuteranopia (green-blind)

#003C7D

Tritanopia (blue-blind)

#004D58

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #1b3e7e;
/* rgb */ color: rgb(27, 62, 126);
/* oklch */ color: oklch(37.7% 0.116 261.2);

Tailwind

colors: {
  custom: {
    50: '#6772a4',
    500: '#1b3e7e',
    950: '#000000',
  },
}

SCSS

$custom: #1b3e7e;
$custom-light: #6772a4;
$custom-dark: #000000;

JSON

{
  "hex": "#1b3e7e",
  "rgb": {
    "r": 27,
    "g": 62,
    "b": 126
  },
  "hsl": {
    "h": 218.788,
    "s": 64.706,
    "l": 30
  },
  "oklch": {
    "l": 0.37683,
    "c": 0.11604,
    "h": 261.2
  },
  "luminance": 0.05185
}

Semantic roles & 50–950 ramp

primary

#1B3E7E

secondary

#B28B43

accent

#AC40E8

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #1B3E7E

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

Preview Lab → · Contrast checker → · Palette generator →