#1B376F#1B376F

#1B376F is a dark, moderate blue. Relative luminance 0.041; OKLCH L 34.9% C 0.103 H 262.4°. Best body text is #FFFFFF at 11.52:1 contrast (WCAG AA passes).

Color values

HEX	#1B376F
RGB	rgb(27, 55, 111)
HSL	hsl(220, 61%, 27%)
HSV	hsv(220, 76%, 44%)
CMYK	cmyk(75.7%, 50.5%, 0%, 56.5%)
CIE-LAB	lab(24.04, 10.76, -35.58)
CIE-LCH	lch(24.04, 37.17, 286.82°)
OKLab	oklab(34.88% -0.0136 -0.1021)
OKLCH	oklch(34.88% 0.103 262.4)
XYZ	xyz(4.6864, 4.1126, 15.5827)
Luminance	0.0411 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B376F #6F531B

analogous

#1B616F #1B376F #291B6F

triadic

#1B376F #6F1B37 #376F1B

tetradic

#1B376F #6F1B61 #6F531B #1B6F29

square

#1B376F #6F1B61 #6F531B #1B6F29

split-complementary

#1B376F #6F291B #616F1B

monochromatic

#060C19 #0F1F3E #1B376F #274FA0 #3669CE

Accessibility & contrast

On white

11.52

#1B376F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.82

#1B376F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B376F

11.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B376F	#FFFFFF	#000000	##FFFFFF
##1B376F	1.00	11.52	1.82	11.52
#FFFFFF	11.52	1.00	21.00	1.00
#000000	1.82	21.00	1.00	21.00
##FFFFFF	11.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#183D71

Deuteranopia (green-blind)

#02366E

Tritanopia (blue-blind)

#00444D

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #1b376f;
/* rgb */ color: rgb(27, 55, 111);
/* oklch */ color: oklch(34.9% 0.103 262.4);

Tailwind

colors: {
  custom: {
    50: '#646d99',
    500: '#1b376f',
    950: '#000000',
  },
}

SCSS

$custom: #1b376f;
$custom-light: #646d99;
$custom-dark: #000000;

JSON

{
  "hex": "#1b376f",
  "rgb": {
    "r": 27,
    "g": 55,
    "b": 111
  },
  "hsl": {
    "h": 220,
    "s": 60.87,
    "l": 27.059
  },
  "oklch": {
    "l": 0.34878,
    "c": 0.10299,
    "h": 262.4
  },
  "luminance": 0.04113
}

Semantic roles & 50–950 ramp

primary

#1B376F

secondary

#A48342

accent

#AF44E4

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06070E

muted

#7A7A7E

Preview Lab

Preview with #1B376F

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

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