#1C64BC#1C64BC

#1C64BC is a mid, vivid cyan. Relative luminance 0.130; OKLCH L 51.0% C 0.155 H 256.2°. Best body text is #FFFFFF at 5.84:1 contrast (WCAG AA passes).

Color values

HEX	#1C64BC
RGB	rgb(28, 100, 188)
HSL	hsl(213, 74%, 42%)
HSV	hsv(213, 85%, 74%)
CMYK	cmyk(85.1%, 46.8%, 0%, 26.3%)
CIE-LAB	lab(42.75, 11.52, -52.32)
CIE-LCH	lch(42.75, 53.57, 282.42°)
OKLab	oklab(50.97% -0.0369 -0.1504)
OKLCH	oklch(50.97% 0.155 256.2)
XYZ	xyz(14.1098, 12.9903, 49.3309)
Luminance	0.1299 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C64BC #BC741C

analogous

#1CB4BC #1C64BC #241CBC

triadic

#1C64BC #BC1C64 #64BC1C

tetradic

#1C64BC #BC1CB4 #BC741C #1CBC24

square

#1C64BC #BC1CB4 #BC741C #1CBC24

split-complementary

#1C64BC #BC241C #B4BC1C

monochromatic

#0C2B51 #144887 #1C64BC #3482E1 #6AA3E9

Accessibility & contrast

On white

5.84

#1C64BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.60

#1C64BC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1C64BC

5.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C64BC	#FFFFFF	#000000	##FFFFFF
##1C64BC	1.00	5.84	3.60	5.84
#FFFFFF	5.84	1.00	21.00	1.00
#000000	3.60	21.00	1.00	21.00
##FFFFFF	5.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#336CBF

Deuteranopia (green-blind)

#005EBA

Tritanopia (blue-blind)

#007987

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #1c64bc;
/* rgb */ color: rgb(28, 100, 188);
/* oklch */ color: oklch(51.0% 0.155 256.2);

Tailwind

colors: {
  custom: {
    50: '#758fd1',
    500: '#1c64bc',
    950: '#000000',
  },
}

SCSS

$custom: #1c64bc;
$custom-light: #758fd1;
$custom-dark: #000000;

JSON

{
  "hex": "#1c64bc",
  "rgb": {
    "r": 28,
    "g": 100,
    "b": 188
  },
  "hsl": {
    "h": 213,
    "s": 74.074,
    "l": 42.353
  },
  "oklch": {
    "l": 0.5097,
    "c": 0.15485,
    "h": 256.2
  },
  "luminance": 0.12992
}

Semantic roles & 50–950 ramp

primary

#1C64BC

secondary

#CE9F65

accent

#9D37F1

background

#F7F8FC

surface

#EEF0F9

border

#C9CBD2

text

#0A0C14

muted

#7C7D82

Preview Lab

Preview with #1C64BC

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

Preview Lab → · Contrast checker → · Palette generator →