#1B63B1#1B63B1

#1B63B1 is a mid, vivid cyan. Relative luminance 0.123; OKLCH L 50.0% C 0.142 H 254.1°. Best body text is #FFFFFF at 6.06:1 contrast (WCAG AA passes).

Color values

HEX	#1B63B1
RGB	rgb(27, 99, 177)
HSL	hsl(211, 74%, 40%)
HSV	hsv(211, 85%, 69%)
CMYK	cmyk(84.7%, 44.1%, 0%, 30.6%)
CIE-LAB	lab(41.73, 7.74, -47.52)
CIE-LCH	lch(41.73, 48.15, 279.25°)
OKLab	oklab(49.95% -0.0387 -0.1363)
OKLCH	oklch(49.95% 0.142 254.1)
XYZ	xyz(12.8467, 12.3294, 43.2892)
Luminance	0.1233 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B63B1 #B1691B

analogous

#1BAEB1 #1B63B1 #1E1BB1

triadic

#1B63B1 #B11B63 #63B11B

tetradic

#1B63B1 #B11BAE #B1691B #1BB11E

square

#1B63B1 #B11BAE #B1691B #1BB11E

split-complementary

#1B63B1 #B11E1B #AEB11B

monochromatic

#0B2847 #13457C #1B63B1 #2B81DF #60A1E7

Accessibility & contrast

On white

6.06

#1B63B1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.47

#1B63B1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1B63B1

6.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B63B1	#FFFFFF	#000000	##FFFFFF
##1B63B1	1.00	6.06	3.47	6.06
#FFFFFF	6.06	1.00	21.00	1.00
#000000	3.47	21.00	1.00	21.00
##FFFFFF	6.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A6AB4

Deuteranopia (green-blind)

#1B5CAF

Tritanopia (blue-blind)

#007681

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #1b63b1;
/* rgb */ color: rgb(27, 99, 177);
/* oklch */ color: oklch(50.0% 0.142 254.1);

Tailwind

colors: {
  custom: {
    50: '#728ec9',
    500: '#1b63b1',
    950: '#000000',
  },
}

SCSS

$custom: #1b63b1;
$custom-light: #728ec9;
$custom-dark: #000000;

JSON

{
  "hex": "#1b63b1",
  "rgb": {
    "r": 27,
    "g": 99,
    "b": 177
  },
  "hsl": {
    "h": 211.2,
    "s": 73.529,
    "l": 40
  },
  "oklch": {
    "l": 0.49953,
    "c": 0.14169,
    "h": 254.1
  },
  "luminance": 0.12331
}

Semantic roles & 50–950 ramp

primary

#1B63B1

secondary

#CB965D

accent

#9838F0

background

#F7F8FC

surface

#EEF0F8

border

#C9CBD1

text

#090C13

muted

#7B7D82

Preview Lab

Preview with #1B63B1

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

Preview Lab → · Contrast checker → · Palette generator →