#1C5F8B#1C5F8B

#1C5F8B is a mid, moderate cyan. Relative luminance 0.103; OKLCH L 46.6% C 0.097 H 242.4°. Best body text is #FFFFFF at 6.86:1 contrast (WCAG AA passes).

Color values

HEX	#1C5F8B
RGB	rgb(28, 95, 139)
HSL	hsl(204, 66%, 33%)
HSV	hsv(204, 80%, 55%)
CMYK	cmyk(79.9%, 31.7%, 0%, 45.5%)
CIE-LAB	lab(38.37, -4.52, -30.22)
CIE-LCH	lch(38.37, 30.56, 261.50°)
OKLab	oklab(46.61% -0.0448 -0.0857)
OKLCH	oklch(46.61% 0.097 242.4)
XYZ	xyz(9.2295, 10.2943, 25.9217)
Luminance	0.1029 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C5F8B #8B481C

analogous

#1C8B7F #1C5F8B #1C278B

triadic

#1C5F8B #8B1C5F #5F8B1C

tetradic

#1C5F8B #7F1C8B #8B481C #278B1C

square

#1C5F8B #7F1C8B #8B481C #278B1C

split-complementary

#1C5F8B #8B1C27 #8B7F1C

monochromatic

#071925 #123C58 #1C5F8B #2682BE #47A0DA

Accessibility & contrast

On white

6.86

#1C5F8B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.06

#1C5F8B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1C5F8B

6.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C5F8B	#FFFFFF	#000000	##FFFFFF
##1C5F8B	1.00	6.86	3.06	6.86
#FFFFFF	6.86	1.00	21.00	1.00
#000000	3.06	21.00	1.00	21.00
##FFFFFF	6.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A608D

Deuteranopia (green-blind)

#3B568A

Tritanopia (blue-blind)

#006A6F

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #1c5f8b;
/* rgb */ color: rgb(28, 95, 139);
/* oklch */ color: oklch(46.6% 0.097 242.4);

Tailwind

colors: {
  custom: {
    50: '#6a8cad',
    500: '#1c5f8b',
    950: '#000000',
  },
}

SCSS

$custom: #1c5f8b;
$custom-light: #6a8cad;
$custom-dark: #000000;

JSON

{
  "hex": "#1c5f8b",
  "rgb": {
    "r": 28,
    "g": 95,
    "b": 139
  },
  "hsl": {
    "h": 203.784,
    "s": 66.467,
    "l": 32.745
  },
  "oklch": {
    "l": 0.46614,
    "c": 0.09669,
    "h": 242.4
  },
  "luminance": 0.10295
}

Semantic roles & 50–950 ramp

primary

#1C5F8B

secondary

#BC7547

accent

#823EE9

background

#F6F8FA

surface

#ECF0F4

border

#C7CBCE

text

#070C10

muted

#7A7D7F

Preview Lab

Preview with #1C5F8B

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

Preview Lab → · Contrast checker → · Palette generator →