#1C5599#1C5599

#1C5599 is a mid, vivid cyan. Relative luminance 0.090; OKLCH L 45.1% C 0.125 H 255.3°. Best body text is #FFFFFF at 7.48:1 contrast (WCAG AA passes).

Color values

HEX	#1C5599
RGB	rgb(28, 85, 153)
HSL	hsl(213, 69%, 35%)
HSV	hsv(213, 82%, 60%)
CMYK	cmyk(81.7%, 44.4%, 0%, 40%)
CIE-LAB	lab(36.07, 7.41, -42.33)
CIE-LCH	lch(36.07, 42.98, 279.93°)
OKLab	oklab(45.07% -0.0318 -0.1213)
OKLCH	oklch(45.07% 0.125 255.3)
XYZ	xyz(9.4750, 9.0426, 31.3768)
Luminance	0.0904 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C5599 #99601C

analogous

#1C9399 #1C5599 #211C99

triadic

#1C5599 #991C55 #55991C

tetradic

#1C5599 #991C93 #99601C #1C9921

square

#1C5599 #991C93 #99601C #1C9921

split-complementary

#1C5599 #99211C #93991C

monochromatic

#091C32 #133865 #1C5599 #2572CD #5091DF

Accessibility & contrast

On white

7.48

#1C5599 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.81

#1C5599 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C5599

7.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C5599	#FFFFFF	#000000	##FFFFFF
##1C5599	1.00	7.48	2.81	7.48
#FFFFFF	7.48	1.00	21.00	1.00
#000000	2.81	21.00	1.00	21.00
##FFFFFF	7.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#325B9C

Deuteranopia (green-blind)

#195098

Tritanopia (blue-blind)

#00656F

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #1c5599;
/* rgb */ color: rgb(28, 85, 153);
/* oklch */ color: oklch(45.1% 0.125 255.3);

Tailwind

colors: {
  custom: {
    50: '#6d84b7',
    500: '#1c5599',
    950: '#000000',
  },
}

SCSS

$custom: #1c5599;
$custom-light: #6d84b7;
$custom-dark: #000000;

JSON

{
  "hex": "#1c5599",
  "rgb": {
    "r": 28,
    "g": 85,
    "b": 153
  },
  "hsl": {
    "h": 212.64,
    "s": 69.061,
    "l": 35.49
  },
  "oklch": {
    "l": 0.45073,
    "c": 0.12545,
    "h": 255.3
  },
  "luminance": 0.09044
}

Semantic roles & 50–950 ramp

primary

#1C5599

secondary

#C28D4F

accent

#9C3CEC

background

#F7F8FB

surface

#EDEFF6

border

#C8CAD0

text

#080A11

muted

#7B7C80

Preview Lab

Preview with #1C5599

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

Preview Lab → · Contrast checker → · Palette generator →