#1C5FB3#1C5FB3

#1C5FB3 is a mid, vivid cyan. Relative luminance 0.117; OKLCH L 49.2% C 0.149 H 256.5°. Best body text is #FFFFFF at 6.29:1 contrast (WCAG AA passes).

Color values

HEX	#1C5FB3
RGB	rgb(28, 95, 179)
HSL	hsl(213, 73%, 41%)
HSV	hsv(213, 84%, 70%)
CMYK	cmyk(84.4%, 46.9%, 0%, 29.8%)
CIE-LAB	lab(40.71, 11.21, -50.34)
CIE-LCH	lch(40.71, 51.57, 282.55°)
OKLab	oklab(49.21% -0.0348 -0.1447)
OKLCH	oklch(49.21% 0.149 256.5)
XYZ	xyz(12.7048, 11.6844, 44.2248)
Luminance	0.1169 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C5FB3 #B3701C

analogous

#1CABB3 #1C5FB3 #241CB3

triadic

#1C5FB3 #B31C5F #5FB31C

tetradic

#1C5FB3 #B31CAB #B3701C #1CB324

square

#1C5FB3 #B31CAB #B3701C #1CB324

split-complementary

#1C5FB3 #B3241C #ABB31C

monochromatic

#0B2749 #14437E #1C5FB3 #2E7CDE #639DE7

Accessibility & contrast

On white

6.29

#1C5FB3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.34

#1C5FB3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1C5FB3

6.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C5FB3	#FFFFFF	#000000	##FFFFFF
##1C5FB3	1.00	6.29	3.34	6.29
#FFFFFF	6.29	1.00	21.00	1.00
#000000	3.34	21.00	1.00	21.00
##FFFFFF	6.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3067B6

Deuteranopia (green-blind)

#005AB1

Tritanopia (blue-blind)

#007380

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #1c5fb3;
/* rgb */ color: rgb(28, 95, 179);
/* oklch */ color: oklch(49.2% 0.149 256.5);

Tailwind

colors: {
  custom: {
    50: '#738bca',
    500: '#1c5fb3',
    950: '#000000',
  },
}

SCSS

$custom: #1c5fb3;
$custom-light: #738bca;
$custom-dark: #000000;

JSON

{
  "hex": "#1c5fb3",
  "rgb": {
    "r": 28,
    "g": 95,
    "b": 179
  },
  "hsl": {
    "h": 213.377,
    "s": 72.947,
    "l": 40.588
  },
  "oklch": {
    "l": 0.49207,
    "c": 0.14879,
    "h": 256.5
  },
  "luminance": 0.11686
}

Semantic roles & 50–950 ramp

primary

#1C5FB3

secondary

#CB9B5F

accent

#9E38F0

background

#F7F8FC

surface

#EEF0F8

border

#C9CBD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #1C5FB3

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

Preview Lab → · Contrast checker → · Palette generator →