#1B2680#1B2680

#1B2680 is a dark, vivid blue. Relative luminance 0.032; OKLCH L 32.9% C 0.150 H 270.0°. Best body text is #FFFFFF at 12.84:1 contrast (WCAG AA passes).

Color values

HEX	#1B2680
RGB	rgb(27, 38, 128)
HSL	hsl(233, 65%, 30%)
HSV	hsv(233, 79%, 50%)
CMYK	cmyk(78.9%, 70.3%, 0%, 49.8%)
CIE-LAB	lab(20.74, 29.48, -51.78)
CIE-LCH	lch(20.74, 59.58, 299.66°)
OKLab	oklab(32.87% 0 -0.1499)
OKLCH	oklch(32.87% 0.15 270)
XYZ	xyz(5.0401, 3.1772, 20.7655)
Luminance	0.0318 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2680 #80751B

analogous

#1B5980 #1B2680 #421B80

triadic

#1B2680 #801B26 #26801B

tetradic

#1B2680 #801B59 #80751B #1B8042

square

#1B2680 #801B59 #80751B #1B8042

split-complementary

#1B2680 #80421B #59801B

monochromatic

#06081B #10174D #1B2680 #2635B3 #3F4FD6

Accessibility & contrast

On white

12.84

#1B2680 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.64

#1B2680 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2680

12.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2680	#FFFFFF	#000000	##FFFFFF
##1B2680	1.00	12.84	1.64	12.84
#FFFFFF	12.84	1.00	21.00	1.00
#000000	1.64	21.00	1.00	21.00
##FFFFFF	12.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003783

Deuteranopia (green-blind)

#002D7E

Tritanopia (blue-blind)

#003F4F

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #1b2680;
/* rgb */ color: rgb(27, 38, 128);
/* oklch */ color: oklch(32.9% 0.150 270.0);

Tailwind

colors: {
  custom: {
    50: '#6a60a6',
    500: '#1b2680',
    950: '#000000',
  },
}

SCSS

$custom: #1b2680;
$custom-light: #6a60a6;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2680",
  "rgb": {
    "r": 27,
    "g": 38,
    "b": 128
  },
  "hsl": {
    "h": 233.465,
    "s": 65.161,
    "l": 30.392
  },
  "oklch": {
    "l": 0.32867,
    "c": 0.14986,
    "h": 270
  },
  "luminance": 0.03178
}

Semantic roles & 50–950 ramp

primary

#1B2680

secondary

#B4A743

accent

#D640E8

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07050F

muted

#7A797F

Preview Lab

Preview with #1B2680

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

Preview Lab → · Contrast checker → · Palette generator →