#1C5DB3#1C5DB3

#1C5DB3 is a mid, vivid cyan. Relative luminance 0.113; OKLCH L 48.8% C 0.151 H 257.3°. Best body text is #FFFFFF at 6.43:1 contrast (WCAG AA passes).

Color values

HEX	#1C5DB3
RGB	rgb(28, 93, 179)
HSL	hsl(214, 73%, 41%)
HSV	hsv(214, 84%, 70%)
CMYK	cmyk(84.4%, 48%, 0%, 29.8%)
CIE-LAB	lab(40.13, 12.52, -51.28)
CIE-LCH	lch(40.13, 52.78, 283.72°)
OKLab	oklab(48.76% -0.0333 -0.1475)
OKLCH	oklch(48.76% 0.151 257.3)
XYZ	xyz(12.5269, 11.3287, 44.1655)
Luminance	0.1133 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C5DB3 #B3721C

analogous

#1CA8B3 #1C5DB3 #261CB3

triadic

#1C5DB3 #B31C5D #5DB31C

tetradic

#1C5DB3 #B31CA8 #B3721C #1CB326

square

#1C5DB3 #B31CA8 #B3721C #1CB326

split-complementary

#1C5DB3 #B3261C #A8B31C

monochromatic

#0B2649 #14427E #1C5DB3 #2E7ADE #639CE7

Accessibility & contrast

On white

6.43

#1C5DB3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.27

#1C5DB3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1C5DB3

6.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C5DB3	#FFFFFF	#000000	##FFFFFF
##1C5DB3	1.00	6.43	3.27	6.43
#FFFFFF	6.43	1.00	21.00	1.00
#000000	3.27	21.00	1.00	21.00
##FFFFFF	6.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B66B6

Deuteranopia (green-blind)

#0058B1

Tritanopia (blue-blind)

#00727F

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #1c5db3;
/* rgb */ color: rgb(28, 93, 179);
/* oklch */ color: oklch(48.8% 0.151 257.3);

Tailwind

colors: {
  custom: {
    50: '#738aca',
    500: '#1c5db3',
    950: '#000000',
  },
}

SCSS

$custom: #1c5db3;
$custom-light: #738aca;
$custom-dark: #000000;

JSON

{
  "hex": "#1c5db3",
  "rgb": {
    "r": 28,
    "g": 93,
    "b": 179
  },
  "hsl": {
    "h": 214.172,
    "s": 72.947,
    "l": 40.588
  },
  "oklch": {
    "l": 0.48758,
    "c": 0.15118,
    "h": 257.3
  },
  "luminance": 0.1133
}

Semantic roles & 50–950 ramp

primary

#1C5DB3

secondary

#CB9D5F

accent

#A138F0

background

#F7F8FC

surface

#EEF0F8

border

#C9CBD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #1C5DB3

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

Preview Lab → · Contrast checker → · Palette generator →