#1B376C#1B376C

#1B376C is a dark, moderate blue. Relative luminance 0.040; OKLCH L 34.6% C 0.098 H 261.7°. Best body text is #FFFFFF at 11.60:1 contrast (WCAG AA passes).

Color values

HEX	#1B376C
RGB	rgb(27, 55, 108)
HSL	hsl(219, 60%, 26%)
HSV	hsv(219, 75%, 42%)
CMYK	cmyk(75%, 49.1%, 0%, 57.6%)
CIE-LAB	lab(23.83, 9.53, -33.99)
CIE-LCH	lch(23.83, 35.30, 285.66°)
OKLab	oklab(34.65% -0.0141 -0.0974)
OKLCH	oklch(34.65% 0.098 261.7)
XYZ	xyz(4.5240, 4.0476, 14.7273)
Luminance	0.0405 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B376C #6C501B

analogous

#1B606C #1B376C #281B6C

triadic

#1B376C #6C1B37 #376C1B

tetradic

#1B376C #6C1B60 #6C501B #1B6C28

square

#1B376C #6C1B60 #6C501B #1B6C28

split-complementary

#1B376C #6C281B #606C1B

monochromatic

#060C18 #0F1E3B #1B376C #27509D #3569CC

Accessibility & contrast

On white

11.60

#1B376C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#1B376C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B376C

11.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B376C	#FFFFFF	#000000	##FFFFFF
##1B376C	1.00	11.60	1.81	11.60
#FFFFFF	11.60	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B3D6E

Deuteranopia (green-blind)

#09356B

Tritanopia (blue-blind)

#00434C

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #1b376c;
/* rgb */ color: rgb(27, 55, 108);
/* oklch */ color: oklch(34.6% 0.098 261.7);

Tailwind

colors: {
  custom: {
    50: '#636d96',
    500: '#1b376c',
    950: '#000000',
  },
}

SCSS

$custom: #1b376c;
$custom-light: #636d96;
$custom-dark: #000000;

JSON

{
  "hex": "#1b376c",
  "rgb": {
    "r": 27,
    "g": 55,
    "b": 108
  },
  "hsl": {
    "h": 219.259,
    "s": 60,
    "l": 26.471
  },
  "oklch": {
    "l": 0.34648,
    "c": 0.09844,
    "h": 261.7
  },
  "luminance": 0.04048
}

Semantic roles & 50–950 ramp

primary

#1B376C

secondary

#A18042

accent

#AC45E3

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06070D

muted

#7A7A7E

Preview Lab

Preview with #1B376C

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

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