#1D557F#1D557F

#1D557F is a dark, moderate cyan. Relative luminance 0.083; OKLCH L 43.4% C 0.090 H 245.0°. Best body text is #FFFFFF at 7.90:1 contrast (WCAG AA passes).

Color values

HEX	#1D557F
RGB	rgb(29, 85, 127)
HSL	hsl(206, 63%, 31%)
HSV	hsv(206, 77%, 50%)
CMYK	cmyk(77.2%, 33.1%, 0%, 50.2%)
CIE-LAB	lab(34.58, -2.75, -28.85)
CIE-LCH	lch(34.58, 28.98, 264.55°)
OKLab	oklab(43.43% -0.0382 -0.0818)
OKLCH	oklch(43.43% 0.09 245)
XYZ	xyz(7.5845, 8.2896, 21.2749)
Luminance	0.0829 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D557F #7F471D

analogous

#1D7F78 #1D557F #1D247F

triadic

#1D557F #7F1D55 #557F1D

tetradic

#1D557F #781D7F #7F471D #247F1D

square

#1D557F #781D7F #7F471D #247F1D

split-complementary

#1D557F #7F1D24 #7F781D

monochromatic

#06121B #12344D #1D557F #2876B1 #4296D4

Accessibility & contrast

On white

7.90

#1D557F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.66

#1D557F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D557F

7.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D557F	#FFFFFF	#000000	##FFFFFF
##1D557F	1.00	7.90	2.66	7.90
#FFFFFF	7.90	1.00	21.00	1.00
#000000	2.66	21.00	1.00	21.00
##FFFFFF	7.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#425681

Deuteranopia (green-blind)

#344D7E

Tritanopia (blue-blind)

#005F64

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #1d557f;
/* rgb */ color: rgb(29, 85, 127);
/* oklch */ color: oklch(43.4% 0.090 245.0);

Tailwind

colors: {
  custom: {
    50: '#6884a4',
    500: '#1d557f',
    950: '#000000',
  },
}

SCSS

$custom: #1d557f;
$custom-light: #6884a4;
$custom-dark: #000000;

JSON

{
  "hex": "#1d557f",
  "rgb": {
    "r": 29,
    "g": 85,
    "b": 127
  },
  "hsl": {
    "h": 205.714,
    "s": 62.821,
    "l": 30.588
  },
  "oklch": {
    "l": 0.43425,
    "c": 0.09027,
    "h": 245
  },
  "luminance": 0.08291
}

Semantic roles & 50–950 ramp

primary

#1D557F

secondary

#B27445

accent

#8842E6

background

#F6F8FA

surface

#EBEFF4

border

#C6CACE

text

#070A0F

muted

#7A7C7F

Preview Lab

Preview with #1D557F

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

Preview Lab → · Contrast checker → · Palette generator →