#1D376B#1D376B

#1D376B is a dark, moderate blue. Relative luminance 0.041; OKLCH L 34.7% C 0.096 H 262.5°. Best body text is #FFFFFF at 11.60:1 contrast (WCAG AA passes).

Color values

HEX	#1D376B
RGB	rgb(29, 55, 107)
HSL	hsl(220, 57%, 27%)
HSV	hsv(220, 73%, 42%)
CMYK	cmyk(72.9%, 48.6%, 0%, 58%)
CIE-LAB	lab(23.85, 9.45, -33.31)
CIE-LCH	lch(23.85, 34.62, 285.84°)
OKLab	oklab(34.67% -0.0125 -0.0954)
OKLCH	oklch(34.67% 0.096 262.5)
XYZ	xyz(4.5258, 4.0547, 14.4512)
Luminance	0.0406 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D376B #6B511D

analogous

#1D5E6B #1D376B #2A1D6B

triadic

#1D376B #6B1D37 #376B1D

tetradic

#1D376B #6B1D5E #6B511D #1D6B2A

square

#1D376B #6B1D5E #6B511D #1D6B2A

split-complementary

#1D376B #6B2A1D #5E6B1D

monochromatic

#070C18 #101E3B #1D376B #2A509B #3969C9

Accessibility & contrast

On white

11.60

#1D376B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#1D376B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D376B

11.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D376B	#FFFFFF	#000000	##FFFFFF
##1D376B	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)

#1D3D6D

Deuteranopia (green-blind)

#0D356A

Tritanopia (blue-blind)

#00434B

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #1d376b;
/* rgb */ color: rgb(29, 55, 107);
/* oklch */ color: oklch(34.7% 0.096 262.5);

Tailwind

colors: {
  custom: {
    50: '#646d96',
    500: '#1d376b',
    950: '#000000',
  },
}

SCSS

$custom: #1d376b;
$custom-light: #646d96;
$custom-dark: #000000;

JSON

{
  "hex": "#1d376b",
  "rgb": {
    "r": 29,
    "g": 55,
    "b": 107
  },
  "hsl": {
    "h": 220,
    "s": 57.353,
    "l": 26.667
  },
  "oklch": {
    "l": 0.34669,
    "c": 0.09619,
    "h": 262.5
  },
  "luminance": 0.04055
}

Semantic roles & 50–950 ramp

primary

#1D376B

secondary

#A08144

accent

#AD47E1

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06070D

muted

#7A7A7E

Preview Lab

Preview with #1D376B

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

Preview Lab → · Contrast checker → · Palette generator →