#1B5FA1#1B5FA1

#1B5FA1 is a mid, vivid cyan. Relative luminance 0.110; OKLCH L 47.9% C 0.125 H 251.8°. Best body text is #FFFFFF at 6.57:1 contrast (WCAG AA passes).

Color values

HEX	#1B5FA1
RGB	rgb(27, 95, 161)
HSL	hsl(210, 71%, 37%)
HSV	hsv(210, 83%, 63%)
CMYK	cmyk(83.2%, 41%, 0%, 36.9%)
CIE-LAB	lab(39.56, 3.98, -41.54)
CIE-LCH	lch(39.56, 41.73, 275.48°)
OKLab	oklab(47.95% -0.039 -0.1188)
OKLCH	oklch(47.95% 0.125 251.8)
XYZ	xyz(10.9748, 10.9893, 35.2540)
Luminance	0.1099 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5FA1 #A15D1B

analogous

#1BA1A0 #1B5FA1 #1B1CA1

triadic

#1B5FA1 #A11B5F #5FA11B

tetradic

#1B5FA1 #A01BA1 #A15D1B #1CA11B

square

#1B5FA1 #A01BA1 #A15D1B #1CA11B

split-complementary

#1B5FA1 #A11B1C #A1A01B

monochromatic

#092138 #12406D #1B5FA1 #247ED5 #549CE2

Accessibility & contrast

On white

6.57

#1B5FA1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.20

#1B5FA1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1B5FA1

6.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5FA1	#FFFFFF	#000000	##FFFFFF
##1B5FA1	1.00	6.57	3.20	6.57
#FFFFFF	6.57	1.00	21.00	1.00
#000000	3.20	21.00	1.00	21.00
##FFFFFF	6.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F64A4

Deuteranopia (green-blind)

#2858A0

Tritanopia (blue-blind)

#006F78

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #1b5fa1;
/* rgb */ color: rgb(27, 95, 161);
/* oklch */ color: oklch(47.9% 0.125 251.8);

Tailwind

colors: {
  custom: {
    50: '#6f8bbd',
    500: '#1b5fa1',
    950: '#000000',
  },
}

SCSS

$custom: #1b5fa1;
$custom-light: #6f8bbd;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5fa1",
  "rgb": {
    "r": 27,
    "g": 95,
    "b": 161
  },
  "hsl": {
    "h": 209.552,
    "s": 71.277,
    "l": 36.863
  },
  "oklch": {
    "l": 0.47946,
    "c": 0.12505,
    "h": 251.8
  },
  "luminance": 0.10991
}

Semantic roles & 50–950 ramp

primary

#1B5FA1

secondary

#C58B52

accent

#933AEE

background

#F7F8FB

surface

#EDF0F6

border

#C8CBD0

text

#090C12

muted

#7B7D81

Preview Lab

Preview with #1B5FA1

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

Preview Lab → · Contrast checker → · Palette generator →