#1B53A1#1B53A1

#1B53A1 is a mid, vivid cyan. Relative luminance 0.090; OKLCH L 45.2% C 0.139 H 257.9°. Best body text is #FFFFFF at 7.50:1 contrast (WCAG AA passes).

Color values

HEX	#1B53A1
RGB	rgb(27, 83, 161)
HSL	hsl(215, 71%, 37%)
HSV	hsv(215, 83%, 63%)
CMYK	cmyk(83.2%, 48.4%, 0%, 36.9%)
CIE-LAB	lab(35.97, 11.85, -47.30)
CIE-LCH	lch(35.97, 48.76, 284.07°)
OKLab	oklab(45.16% -0.0292 -0.136)
OKLCH	oklch(45.16% 0.139 257.9)
XYZ	xyz(9.9759, 8.9915, 34.9211)
Luminance	0.0899 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B53A1 #A1691B

analogous

#1B96A1 #1B53A1 #261BA1

triadic

#1B53A1 #A11B53 #53A11B

tetradic

#1B53A1 #A11B96 #A1691B #1BA126

square

#1B53A1 #A11B96 #A1691B #1BA126

split-complementary

#1B53A1 #A1261B #96A11B

monochromatic

#091D38 #12386D #1B53A1 #246ED5 #5490E2

Accessibility & contrast

On white

7.50

#1B53A1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.80

#1B53A1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B53A1

7.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B53A1	#FFFFFF	#000000	##FFFFFF
##1B53A1	1.00	7.50	2.80	7.50
#FFFFFF	7.50	1.00	21.00	1.00
#000000	2.80	21.00	1.00	21.00
##FFFFFF	7.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#265BA4

Deuteranopia (green-blind)

#004F9F

Tritanopia (blue-blind)

#006672

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #1b53a1;
/* rgb */ color: rgb(27, 83, 161);
/* oklch */ color: oklch(45.2% 0.139 257.9);

Tailwind

colors: {
  custom: {
    50: '#6f82bd',
    500: '#1b53a1',
    950: '#000000',
  },
}

SCSS

$custom: #1b53a1;
$custom-light: #6f82bd;
$custom-dark: #000000;

JSON

{
  "hex": "#1b53a1",
  "rgb": {
    "r": 27,
    "g": 83,
    "b": 161
  },
  "hsl": {
    "h": 214.925,
    "s": 71.277,
    "l": 36.863
  },
  "oklch": {
    "l": 0.45158,
    "c": 0.13911,
    "h": 257.9
  },
  "luminance": 0.08993
}

Semantic roles & 50–950 ramp

primary

#1B53A1

secondary

#C59552

accent

#A33AEE

background

#F7F7FB

surface

#EDEEF7

border

#C8C9D0

text

#090A12

muted

#7B7C81

Preview Lab

Preview with #1B53A1

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

Preview Lab → · Contrast checker → · Palette generator →