#1B3E7D#1B3E7D

#1B3E7D is a dark, moderate blue. Relative luminance 0.052; OKLCH L 37.6% C 0.115 H 261.0°. Best body text is #FFFFFF at 10.34:1 contrast (WCAG AA passes).

Color values

HEX	#1B3E7D
RGB	rgb(27, 62, 125)
HSL	hsl(219, 64%, 30%)
HSV	hsv(219, 78%, 49%)
CMYK	cmyk(78.4%, 50.4%, 0%, 51%)
CIE-LAB	lab(27.18, 11.57, -39.40)
CIE-LCH	lch(27.18, 41.06, 286.36°)
OKLab	oklab(37.6% -0.0178 -0.1132)
OKLCH	oklch(37.6% 0.115 261)
XYZ	xyz(5.8750, 5.1583, 20.0841)
Luminance	0.0516 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B3E7D #7D5A1B

analogous

#1B6F7D #1B3E7D #291B7D

triadic

#1B3E7D #7D1B3E #3E7D1B

tetradic

#1B3E7D #7D1B6F #7D5A1B #1B7D29

square

#1B3E7D #7D1B6F #7D5A1B #1B7D29

split-complementary

#1B3E7D #7D291B #6F7D1B

monochromatic

#050C19 #10254B #1B3E7D #2657AF #3D74D5

Accessibility & contrast

On white

10.34

#1B3E7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#1B3E7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3E7D

10.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B3E7D	#FFFFFF	#000000	##FFFFFF
##1B3E7D	1.00	10.34	2.03	10.34
#FFFFFF	10.34	1.00	21.00	1.00
#000000	2.03	21.00	1.00	21.00
##FFFFFF	10.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A457F

Deuteranopia (green-blind)

#003C7C

Tritanopia (blue-blind)

#004D57

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #1b3e7d;
/* rgb */ color: rgb(27, 62, 125);
/* oklch */ color: oklch(37.6% 0.115 261.0);

Tailwind

colors: {
  custom: {
    50: '#6772a3',
    500: '#1b3e7d',
    950: '#000000',
  },
}

SCSS

$custom: #1b3e7d;
$custom-light: #6772a3;
$custom-dark: #000000;

JSON

{
  "hex": "#1b3e7d",
  "rgb": {
    "r": 27,
    "g": 62,
    "b": 125
  },
  "hsl": {
    "h": 218.571,
    "s": 64.474,
    "l": 29.804
  },
  "oklch": {
    "l": 0.37605,
    "c": 0.11459,
    "h": 261
  },
  "luminance": 0.05159
}

Semantic roles & 50–950 ramp

primary

#1B3E7D

secondary

#B18A43

accent

#AC40E7

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #1B3E7D

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

Preview Lab → · Contrast checker → · Palette generator →