#1B2376#1B2376

#1B2376 is a dark, vivid blue. Relative luminance 0.027; OKLCH L 31.3% C 0.140 H 271.1°. Best body text is #FFFFFF at 13.56:1 contrast (WCAG AA passes).

Color values

HEX	#1B2376
RGB	rgb(27, 35, 118)
HSL	hsl(235, 63%, 28%)
HSV	hsv(235, 77%, 46%)
CMYK	cmyk(77.1%, 70.3%, 0%, 53.7%)
CIE-LAB	lab(18.98, 27.68, -48.30)
CIE-LCH	lch(18.98, 55.67, 299.82°)
OKLab	oklab(31.28% 0.0028 -0.1397)
OKLCH	oklch(31.28% 0.14 271.1)
XYZ	xyz(4.3219, 2.7426, 17.4376)
Luminance	0.0274 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2376 #766E1B

analogous

#1B5076 #1B2376 #401B76

triadic

#1B2376 #761B23 #23761B

tetradic

#1B2376 #761B50 #766E1B #1B7640

square

#1B2376 #761B50 #766E1B #1B7640

split-complementary

#1B2376 #76401B #50761B

monochromatic

#060719 #101444 #1B2376 #2632A8 #3A47D2

Accessibility & contrast

On white

13.56

#1B2376 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#1B2376 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2376

13.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2376	#FFFFFF	#000000	##FFFFFF
##1B2376	1.00	13.56	1.55	13.56
#FFFFFF	13.56	1.00	21.00	1.00
#000000	1.55	21.00	1.00	21.00
##FFFFFF	13.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003279

Deuteranopia (green-blind)

#002A74

Tritanopia (blue-blind)

#003949

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #1b2376;
/* rgb */ color: rgb(27, 35, 118);
/* oklch */ color: oklch(31.3% 0.140 271.1);

Tailwind

colors: {
  custom: {
    50: '#675e9e',
    500: '#1b2376',
    950: '#000000',
  },
}

SCSS

$custom: #1b2376;
$custom-light: #675e9e;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2376",
  "rgb": {
    "r": 27,
    "g": 35,
    "b": 118
  },
  "hsl": {
    "h": 234.725,
    "s": 62.759,
    "l": 28.431
  },
  "oklch": {
    "l": 0.31283,
    "c": 0.13973,
    "h": 271.1
  },
  "luminance": 0.02743
}

Semantic roles & 50–950 ramp

primary

#1B2376

secondary

#AAA142

accent

#D742E6

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07040E

muted

#7A797E

Preview Lab

Preview with #1B2376

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

Preview Lab → · Contrast checker → · Palette generator →