#1D4378#1D4378

#1D4378 is a dark, moderate cyan. Relative luminance 0.056; OKLCH L 38.5% C 0.100 H 257.3°. Best body text is #FFFFFF at 9.88:1 contrast (WCAG AA passes).

Color values

HEX	#1D4378
RGB	rgb(29, 67, 120)
HSL	hsl(215, 61%, 29%)
HSV	hsv(215, 76%, 47%)
CMYK	cmyk(75.8%, 44.2%, 0%, 52.9%)
CIE-LAB	lab(28.46, 6.36, -34.20)
CIE-LCH	lch(28.46, 34.78, 280.54°)
OKLab	oklab(38.51% -0.022 -0.0978)
OKLCH	oklch(38.51% 0.1 257.3)
XYZ	xyz(5.9028, 5.6309, 18.5414)
Luminance	0.0563 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D4378 #78521D

analogous

#1D7178 #1D4378 #251D78

triadic

#1D4378 #781D43 #43781D

tetradic

#1D4378 #781D71 #78521D #1D7825

square

#1D4378 #781D71 #78521D #1D7825

split-complementary

#1D4378 #78251D #71781D

monochromatic

#060E19 #112747 #1D4378 #295FA9 #3F7CD1

Accessibility & contrast

On white

9.88

#1D4378 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.13

#1D4378 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D4378

9.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D4378	#FFFFFF	#000000	##FFFFFF
##1D4378	1.00	9.88	2.13	9.88
#FFFFFF	9.88	1.00	21.00	1.00
#000000	2.13	21.00	1.00	21.00
##FFFFFF	9.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#29487A

Deuteranopia (green-blind)

#193F77

Tritanopia (blue-blind)

#004F57

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #1d4378;
/* rgb */ color: rgb(29, 67, 120);
/* oklch */ color: oklch(38.5% 0.100 257.3);

Tailwind

colors: {
  custom: {
    50: '#66769f',
    500: '#1d4378',
    950: '#000000',
  },
}

SCSS

$custom: #1d4378;
$custom-light: #66769f;
$custom-dark: #000000;

JSON

{
  "hex": "#1d4378",
  "rgb": {
    "r": 29,
    "g": 67,
    "b": 120
  },
  "hsl": {
    "h": 214.945,
    "s": 61.074,
    "l": 29.216
  },
  "oklch": {
    "l": 0.38505,
    "c": 0.1002,
    "h": 257.3
  },
  "luminance": 0.05632
}

Semantic roles & 50–950 ramp

primary

#1D4378

secondary

#AC8145

accent

#A144E4

background

#F6F7F9

surface

#EBEDF2

border

#C6C8CC

text

#06080E

muted

#7A7B7E

Preview Lab

Preview with #1D4378

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

Preview Lab → · Contrast checker → · Palette generator →