#1C557F#1C557F

#1C557F is a dark, moderate cyan. Relative luminance 0.083; OKLCH L 43.4% C 0.091 H 244.7°. Best body text is #FFFFFF at 7.91:1 contrast (WCAG AA passes).

Color values

HEX	#1C557F
RGB	rgb(28, 85, 127)
HSL	hsl(205, 64%, 30%)
HSV	hsv(205, 78%, 50%)
CMYK	cmyk(78%, 33.1%, 0%, 50.2%)
CIE-LAB	lab(34.55, -2.89, -28.90)
CIE-LCH	lch(34.55, 29.04, 264.29°)
OKLab	oklab(43.39% -0.0387 -0.0819)
OKLCH	oklch(43.39% 0.091 244.7)
XYZ	xyz(7.5567, 8.2753, 21.2736)
Luminance	0.0828 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C557F #7F461C

analogous

#1C7F78 #1C557F #1C237F

triadic

#1C557F #7F1C55 #557F1C

tetradic

#1C557F #781C7F #7F461C #237F1C

square

#1C557F #781C7F #7F461C #237F1C

split-complementary

#1C557F #7F1C23 #7F781C

monochromatic

#06121B #11334D #1C557F #2777B1 #4096D5

Accessibility & contrast

On white

7.91

#1C557F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.66

#1C557F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C557F

7.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C557F	#FFFFFF	#000000	##FFFFFF
##1C557F	1.00	7.91	2.66	7.91
#FFFFFF	7.91	1.00	21.00	1.00
#000000	2.66	21.00	1.00	21.00
##FFFFFF	7.91	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: #1c557f;
/* rgb */ color: rgb(28, 85, 127);
/* oklch */ color: oklch(43.4% 0.091 244.7);

Tailwind

colors: {
  custom: {
    50: '#6784a4',
    500: '#1c557f',
    950: '#000000',
  },
}

SCSS

$custom: #1c557f;
$custom-light: #6784a4;
$custom-dark: #000000;

JSON

{
  "hex": "#1c557f",
  "rgb": {
    "r": 28,
    "g": 85,
    "b": 127
  },
  "hsl": {
    "h": 205.455,
    "s": 63.871,
    "l": 30.392
  },
  "oklch": {
    "l": 0.43393,
    "c": 0.09065,
    "h": 244.7
  },
  "luminance": 0.08276
}

Semantic roles & 50–950 ramp

primary

#1C557F

secondary

#B37344

accent

#8741E7

background

#F6F8FA

surface

#EBEFF4

border

#C6CACE

text

#070A0F

muted

#7A7C7F

Preview Lab

Preview with #1C557F

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

Preview Lab → · Contrast checker → · Palette generator →