#1B5CAA#1B5CAA

#1B5CAA is a mid, vivid cyan. Relative luminance 0.108; OKLCH L 47.9% C 0.141 H 255.7°. Best body text is #FFFFFF at 6.65:1 contrast (WCAG AA passes).

Color values

HEX	#1B5CAA
RGB	rgb(27, 92, 170)
HSL	hsl(213, 73%, 39%)
HSV	hsv(213, 84%, 67%)
CMYK	cmyk(84.1%, 45.9%, 0%, 33.3%)
CIE-LAB	lab(39.22, 9.51, -47.43)
CIE-LCH	lch(39.22, 48.37, 281.33°)
OKLab	oklab(47.86% -0.0346 -0.1362)
OKLCH	oklch(47.86% 0.141 255.7)
XYZ	xyz(11.5321, 10.7881, 39.4969)
Luminance	0.1079 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5CAA #AA691B

analogous

#1BA3AA #1B5CAA #211BAA

triadic

#1B5CAA #AA1B5C #5CAA1B

tetradic

#1B5CAA #AA1BA3 #AA691B #1BAA21

square

#1B5CAA #AA1BA3 #AA691B #1BAA21

split-complementary

#1B5CAA #AA211B #A3AA1B

monochromatic

#0A2340 #133F75 #1B5CAA #2679DC #5B99E5

Accessibility & contrast

On white

6.65

#1B5CAA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.16

#1B5CAA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1B5CAA

6.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5CAA	#FFFFFF	#000000	##FFFFFF
##1B5CAA	1.00	6.65	3.16	6.65
#FFFFFF	6.65	1.00	21.00	1.00
#000000	3.16	21.00	1.00	21.00
##FFFFFF	6.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3263AD

Deuteranopia (green-blind)

#0E56A8

Tritanopia (blue-blind)

#006F7A

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #1b5caa;
/* rgb */ color: rgb(27, 92, 170);
/* oklch */ color: oklch(47.9% 0.141 255.7);

Tailwind

colors: {
  custom: {
    50: '#7189c4',
    500: '#1b5caa',
    950: '#000000',
  },
}

SCSS

$custom: #1b5caa;
$custom-light: #7189c4;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5caa",
  "rgb": {
    "r": 27,
    "g": 92,
    "b": 170
  },
  "hsl": {
    "h": 212.727,
    "s": 72.589,
    "l": 38.627
  },
  "oklch": {
    "l": 0.47861,
    "c": 0.14051,
    "h": 255.7
  },
  "luminance": 0.1079
}

Semantic roles & 50–950 ramp

primary

#1B5CAA

secondary

#C99658

accent

#9C39EF

background

#F7F8FC

surface

#EDF0F8

border

#C8CBD1

text

#090B13

muted

#7B7C82

Preview Lab

Preview with #1B5CAA

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

Preview Lab → · Contrast checker → · Palette generator →