#1B5FA0#1B5FA0

#1B5FA0 is a mid, vivid cyan. Relative luminance 0.110; OKLCH L 47.9% C 0.124 H 251.5°. Best body text is #FFFFFF at 6.58:1 contrast (WCAG AA passes).

Color values

HEX	#1B5FA0
RGB	rgb(27, 95, 160)
HSL	hsl(209, 71%, 37%)
HSV	hsv(209, 83%, 63%)
CMYK	cmyk(83.1%, 40.6%, 0%, 37.3%)
CIE-LAB	lab(39.50, 3.59, -41.04)
CIE-LCH	lch(39.50, 41.19, 275.00°)
OKLab	oklab(47.88% -0.0393 -0.1173)
OKLCH	oklch(47.88% 0.124 251.5)
XYZ	xyz(10.8870, 10.9541, 34.7915)
Luminance	0.1095 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5FA0 #A05C1B

analogous

#1BA09F #1B5FA0 #1B1DA0

triadic

#1B5FA0 #A01B5F #5FA01B

tetradic

#1B5FA0 #9F1BA0 #A05C1B #1DA01B

square

#1B5FA0 #9F1BA0 #A05C1B #1DA01B

split-complementary

#1B5FA0 #A01B1D #A09F1B

monochromatic

#092137 #12406C #1B5FA0 #247ED4 #539CE2

Accessibility & contrast

On white

6.58

#1B5FA0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.19

#1B5FA0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1B5FA0

6.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5FA0	#FFFFFF	#000000	##FFFFFF
##1B5FA0	1.00	6.58	3.19	6.58
#FFFFFF	6.58	1.00	21.00	1.00
#000000	3.19	21.00	1.00	21.00
##FFFFFF	6.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F64A3

Deuteranopia (green-blind)

#29589F

Tritanopia (blue-blind)

#006F77

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #1b5fa0;
/* rgb */ color: rgb(27, 95, 160);
/* oklch */ color: oklch(47.9% 0.124 251.5);

Tailwind

colors: {
  custom: {
    50: '#6f8bbc',
    500: '#1b5fa0',
    950: '#000000',
  },
}

SCSS

$custom: #1b5fa0;
$custom-light: #6f8bbc;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5fa0",
  "rgb": {
    "r": 27,
    "g": 95,
    "b": 160
  },
  "hsl": {
    "h": 209.323,
    "s": 71.123,
    "l": 36.667
  },
  "oklch": {
    "l": 0.47881,
    "c": 0.12373,
    "h": 251.5
  },
  "luminance": 0.10955
}

Semantic roles & 50–950 ramp

primary

#1B5FA0

secondary

#C58A52

accent

#923AEE

background

#F7F8FB

surface

#EDF0F6

border

#C8CBD0

text

#080C12

muted

#7B7D81

Preview Lab

Preview with #1B5FA0

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

Preview Lab → · Contrast checker → · Palette generator →