#1D377D#1D377D

#1D377D is a dark, vivid blue. Relative luminance 0.045; OKLCH L 36.1% C 0.123 H 265.3°. Best body text is #FFFFFF at 11.08:1 contrast (WCAG AA passes).

Color values

HEX	#1D377D
RGB	rgb(29, 55, 125)
HSL	hsl(224, 62%, 30%)
HSV	hsv(224, 77%, 49%)
CMYK	cmyk(76.8%, 56%, 0%, 51%)
CIE-LAB	lab(25.18, 16.75, -42.63)
CIE-LCH	lch(25.18, 45.80, 291.45°)
OKLab	oklab(36.1% -0.0102 -0.1228)
OKLCH	oklch(36.1% 0.123 265.3)
XYZ	xyz(5.5733, 4.4737, 19.9678)
Luminance	0.0447 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D377D #7D631D

analogous

#1D677D #1D377D #331D7D

triadic

#1D377D #7D1D37 #377D1D

tetradic

#1D377D #7D1D67 #7D631D #1D7D33

square

#1D377D #7D1D67 #7D631D #1D7D33

split-complementary

#1D377D #7D331D #677D1D

monochromatic

#060B1A #11214B #1D377D #294DAF #4169D3

Accessibility & contrast

On white

11.08

#1D377D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#1D377D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D377D

11.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D377D	#FFFFFF	#000000	##FFFFFF
##1D377D	1.00	11.08	1.89	11.08
#FFFFFF	11.08	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00407F

Deuteranopia (green-blind)

#00377C

Tritanopia (blue-blind)

#004854

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #1d377d;
/* rgb */ color: rgb(29, 55, 125);
/* oklch */ color: oklch(36.1% 0.123 265.3);

Tailwind

colors: {
  custom: {
    50: '#686da3',
    500: '#1d377d',
    950: '#000000',
  },
}

SCSS

$custom: #1d377d;
$custom-light: #686da3;
$custom-dark: #000000;

JSON

{
  "hex": "#1d377d",
  "rgb": {
    "r": 29,
    "g": 55,
    "b": 125
  },
  "hsl": {
    "h": 223.75,
    "s": 62.338,
    "l": 30.196
  },
  "oklch": {
    "l": 0.36104,
    "c": 0.12321,
    "h": 265.3
  },
  "luminance": 0.04474
}

Semantic roles & 50–950 ramp

primary

#1D377D

secondary

#B19345

accent

#B942E5

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #1D377D

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

Preview Lab → · Contrast checker → · Palette generator →