#1C557B#1C557B

#1C557B is a dark, moderate cyan. Relative luminance 0.082; OKLCH L 43.2% C 0.086 H 242.1°. Best body text is #FFFFFF at 7.97:1 contrast (WCAG AA passes).

Color values

HEX	#1C557B
RGB	rgb(28, 85, 123)
HSL	hsl(204, 63%, 30%)
HSV	hsv(204, 77%, 48%)
CMYK	cmyk(77.2%, 30.9%, 0%, 51.8%)
CIE-LAB	lab(34.34, -4.44, -26.76)
CIE-LCH	lch(34.34, 27.12, 260.58°)
OKLab	oklab(43.16% -0.0401 -0.0757)
OKLCH	oklch(43.16% 0.086 242.1)
XYZ	xyz(7.3012, 8.1731, 19.9278)
Luminance	0.0817 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C557B #7B421C

analogous

#1C7B72 #1C557B #1C267B

triadic

#1C557B #7B1C55 #557B1C

tetradic

#1C557B #721C7B #7B421C #267B1C

square

#1C557B #721C7B #7B421C #267B1C

split-complementary

#1C557B #7B1C26 #7B721C

monochromatic

#061119 #113349 #1C557B #2777AD #3E98D3

Accessibility & contrast

On white

7.97

#1C557B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.63

#1C557B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C557B

7.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C557B	#FFFFFF	#000000	##FFFFFF
##1C557B	1.00	7.97	2.63	7.97
#FFFFFF	7.97	1.00	21.00	1.00
#000000	2.63	21.00	1.00	21.00
##FFFFFF	7.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#43567D

Deuteranopia (green-blind)

#364D7A

Tritanopia (blue-blind)

#005E62

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #1c557b;
/* rgb */ color: rgb(28, 85, 123);
/* oklch */ color: oklch(43.2% 0.086 242.1);

Tailwind

colors: {
  custom: {
    50: '#6784a1',
    500: '#1c557b',
    950: '#000000',
  },
}

SCSS

$custom: #1c557b;
$custom-light: #6784a1;
$custom-dark: #000000;

JSON

{
  "hex": "#1c557b",
  "rgb": {
    "r": 28,
    "g": 85,
    "b": 123
  },
  "hsl": {
    "h": 204,
    "s": 62.914,
    "l": 29.608
  },
  "oklch": {
    "l": 0.4316,
    "c": 0.08567,
    "h": 242.1
  },
  "luminance": 0.08174
}

Semantic roles & 50–950 ramp

primary

#1C557B

secondary

#AF6F44

accent

#8342E6

background

#F6F8F9

surface

#EBEFF2

border

#C6CACC

text

#070A0F

muted

#7A7C7E

Preview Lab

Preview with #1C557B

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

Preview Lab → · Contrast checker → · Palette generator →