#1D5378#1D5378

#1D5378 is a dark, moderate cyan. Relative luminance 0.078; OKLCH L 42.5% C 0.083 H 242.5°. Best body text is #FFFFFF at 8.20:1 contrast (WCAG AA passes).

Color values

HEX	#1D5378
RGB	rgb(29, 83, 120)
HSL	hsl(204, 61%, 29%)
HSV	hsv(204, 76%, 47%)
CMYK	cmyk(75.8%, 30.8%, 0%, 52.9%)
CIE-LAB	lab(33.57, -4.19, -26.11)
CIE-LCH	lch(33.57, 26.44, 260.88°)
OKLab	oklab(42.51% -0.0384 -0.0738)
OKLCH	oklch(42.51% 0.083 242.5)
XYZ	xyz(6.9888, 7.8030, 18.9035)
Luminance	0.0780 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D5378 #78421D

analogous

#1D7870 #1D5378 #1D2578

triadic

#1D5378 #781D53 #53781D

tetradic

#1D5378 #701D78 #78421D #25781D

square

#1D5378 #701D78 #78421D #25781D

split-complementary

#1D5378 #781D25 #78701D

monochromatic

#061119 #113147 #1D5378 #2975A9 #3F95D1

Accessibility & contrast

On white

8.20

#1D5378 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.56

#1D5378 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D5378

8.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D5378	#FFFFFF	#000000	##FFFFFF
##1D5378	1.00	8.20	2.56	8.20
#FFFFFF	8.20	1.00	21.00	1.00
#000000	2.56	21.00	1.00	21.00
##FFFFFF	8.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#42547A

Deuteranopia (green-blind)

#354B77

Tritanopia (blue-blind)

#005C60

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #1d5378;
/* rgb */ color: rgb(29, 83, 120);
/* oklch */ color: oklch(42.5% 0.083 242.5);

Tailwind

colors: {
  custom: {
    50: '#66839f',
    500: '#1d5378',
    950: '#000000',
  },
}

SCSS

$custom: #1d5378;
$custom-light: #66839f;
$custom-dark: #000000;

JSON

{
  "hex": "#1d5378",
  "rgb": {
    "r": 29,
    "g": 83,
    "b": 120
  },
  "hsl": {
    "h": 204.396,
    "s": 61.074,
    "l": 29.216
  },
  "oklch": {
    "l": 0.42507,
    "c": 0.08324,
    "h": 242.5
  },
  "luminance": 0.07804
}

Semantic roles & 50–950 ramp

primary

#1D5378

secondary

#AC6F45

accent

#8544E4

background

#F6F8F9

surface

#EBEFF2

border

#C6CACC

text

#070A0E

muted

#7A7C7E

Preview Lab

Preview with #1D5378

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

Preview Lab → · Contrast checker → · Palette generator →