#1B3E82#1B3E82

#1B3E82 is a dark, vivid blue. Relative luminance 0.053; OKLCH L 38.0% C 0.122 H 261.9°. Best body text is #FFFFFF at 10.20:1 contrast (WCAG AA passes).

Color values

HEX	#1B3E82
RGB	rgb(27, 62, 130)
HSL	hsl(220, 66%, 31%)
HSV	hsv(220, 79%, 51%)
CMYK	cmyk(79.2%, 52.3%, 0%, 49%)
CIE-LAB	lab(27.54, 13.61, -41.94)
CIE-LCH	lch(27.54, 44.10, 287.98°)
OKLab	oklab(38% -0.0171 -0.1207)
OKLCH	oklch(38% 0.122 261.9)
XYZ	xyz(6.2024, 5.2893, 21.8088)
Luminance	0.0529 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B3E82 #825F1B

analogous

#1B7182 #1B3E82 #2C1B82

triadic

#1B3E82 #821B3E #3E821B

tetradic

#1B3E82 #821B71 #825F1B #1B822C

square

#1B3E82 #821B71 #825F1B #1B822C

split-complementary

#1B3E82 #822C1B #71821B

monochromatic

#060E1D #10264F #1B3E82 #2656B5 #4073D7

Accessibility & contrast

On white

10.20

#1B3E82 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.06

#1B3E82 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3E82

10.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B3E82	#FFFFFF	#000000	##FFFFFF
##1B3E82	1.00	10.20	2.06	10.20
#FFFFFF	10.20	1.00	21.00	1.00
#000000	2.06	21.00	1.00	21.00
##FFFFFF	10.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#134684

Deuteranopia (green-blind)

#003D81

Tritanopia (blue-blind)

#004E5A

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #1b3e82;
/* rgb */ color: rgb(27, 62, 130);
/* oklch */ color: oklch(38.0% 0.122 261.9);

Tailwind

colors: {
  custom: {
    50: '#6872a7',
    500: '#1b3e82',
    950: '#000000',
  },
}

SCSS

$custom: #1b3e82;
$custom-light: #6872a7;
$custom-dark: #000000;

JSON

{
  "hex": "#1b3e82",
  "rgb": {
    "r": 27,
    "g": 62,
    "b": 130
  },
  "hsl": {
    "h": 219.612,
    "s": 65.605,
    "l": 30.784
  },
  "oklch": {
    "l": 0.37998,
    "c": 0.12189,
    "h": 261.9
  },
  "luminance": 0.0529
}

Semantic roles & 50–950 ramp

primary

#1B3E82

secondary

#B68F43

accent

#AF3FE9

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #1B3E82

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

Preview Lab → · Contrast checker → · Palette generator →