#1C5F9F#1C5F9F

#1C5F9F is a mid, vivid cyan. Relative luminance 0.109; OKLCH L 47.8% C 0.122 H 251.3°. Best body text is #FFFFFF at 6.59:1 contrast (WCAG AA passes).

Color values

HEX	#1C5F9F
RGB	rgb(28, 95, 159)
HSL	hsl(209, 70%, 37%)
HSV	hsv(209, 82%, 62%)
CMYK	cmyk(82.4%, 40.3%, 0%, 37.6%)
CIE-LAB	lab(39.47, 3.29, -40.50)
CIE-LCH	lch(39.47, 40.63, 274.65°)
OKLab	oklab(47.84% -0.0391 -0.1157)
OKLCH	oklch(47.84% 0.122 251.3)
XYZ	xyz(10.8267, 10.9332, 34.3339)
Luminance	0.1093 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C5F9F #9F5C1C

analogous

#1C9F9E #1C5F9F #1C1E9F

triadic

#1C5F9F #9F1C5F #5F9F1C

tetradic

#1C5F9F #9E1C9F #9F5C1C #1E9F1C

square

#1C5F9F #9E1C9F #9F5C1C #1E9F1C

split-complementary

#1C5F9F #9F1C1E #9F9E1C

monochromatic

#0A2137 #13406B #1C5F9F #257ED3 #549CE1

Accessibility & contrast

On white

6.59

#1C5F9F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.19

#1C5F9F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1C5F9F

6.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C5F9F	#FFFFFF	#000000	##FFFFFF
##1C5F9F	1.00	6.59	3.19	6.59
#FFFFFF	6.59	1.00	21.00	1.00
#000000	3.19	21.00	1.00	21.00
##FFFFFF	6.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4063A2

Deuteranopia (green-blind)

#2B589E

Tritanopia (blue-blind)

#006E77

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #1c5f9f;
/* rgb */ color: rgb(28, 95, 159);
/* oklch */ color: oklch(47.8% 0.122 251.3);

Tailwind

colors: {
  custom: {
    50: '#6f8bbc',
    500: '#1c5f9f',
    950: '#000000',
  },
}

SCSS

$custom: #1c5f9f;
$custom-light: #6f8bbc;
$custom-dark: #000000;

JSON

{
  "hex": "#1c5f9f",
  "rgb": {
    "r": 28,
    "g": 95,
    "b": 159
  },
  "hsl": {
    "h": 209.313,
    "s": 70.053,
    "l": 36.667
  },
  "oklch": {
    "l": 0.47841,
    "c": 0.12214,
    "h": 251.3
  },
  "luminance": 0.10934
}

Semantic roles & 50–950 ramp

primary

#1C5F9F

secondary

#C48A53

accent

#923BED

background

#F7F8FB

surface

#EDF0F6

border

#C8CBD0

text

#080C12

muted

#7B7D81

Preview Lab

Preview with #1C5F9F

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

Preview Lab → · Contrast checker → · Palette generator →