#1F91B2#1F91B2

#1F91B2 is a mid, moderate cyan. Relative luminance 0.238; OKLCH L 61.2% C 0.106 H 223.0°. Best body text is #000000 at 5.75:1 contrast (WCAG AA passes).

Color values

HEX	#1F91B2
RGB	rgb(31, 145, 178)
HSL	hsl(193, 70%, 41%)
HSV	hsv(193, 83%, 70%)
CMYK	cmyk(82.6%, 18.5%, 0%, 30.2%)
CIE-LAB	lab(55.84, -18.73, -25.89)
CIE-LCH	lch(55.84, 31.96, 234.11°)
OKLab	oklab(61.16% -0.0778 -0.0726)
OKLCH	oklch(61.16% 0.106 223)
XYZ	xyz(18.7230, 23.7541, 45.7090)
Luminance	0.2376 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F91B2 #B2401F

analogous

#1FB289 #1F91B2 #1F48B2

triadic

#1F91B2 #B21F91 #91B21F

tetradic

#1F91B2 #891FB2 #B2401F #48B21F

square

#1F91B2 #891FB2 #B2401F #48B21F

split-complementary

#1F91B2 #B21F48 #B2891F

monochromatic

#0D3C4A #16677E #1F91B2 #33B6DB #67C8E5

Accessibility & contrast

On white

3.65

#1F91B2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.75

#1F91B2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #1F91B2

5.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F91B2	#FFFFFF	#000000	##000000
##1F91B2	1.00	3.65	5.75	5.75
#FFFFFF	3.65	1.00	21.00	21.00
#000000	5.75	21.00	1.00	1.00
##000000	5.75	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7E8DB4

Deuteranopia (green-blind)

#6B80B2

Tritanopia (blue-blind)

#009B9C

Achromatopsia (no color)

#868686

Design tokens & code

CSS

--color: #1f91b2;
/* rgb */ color: rgb(31, 145, 178);
/* oklch */ color: oklch(61.2% 0.106 223.0);

Tailwind

colors: {
  custom: {
    50: '#75b1c9',
    500: '#1f91b2',
    950: '#000000',
  },
}

SCSS

$custom: #1f91b2;
$custom-light: #75b1c9;
$custom-dark: #000000;

JSON

{
  "hex": "#1f91b2",
  "rgb": {
    "r": 31,
    "g": 145,
    "b": 178
  },
  "hsl": {
    "h": 193.469,
    "s": 70.335,
    "l": 40.98
  },
  "oklch": {
    "l": 0.61156,
    "c": 0.10643,
    "h": 223
  },
  "luminance": 0.23756
}

Semantic roles & 50–950 ramp

primary

#1F91B2

secondary

#CA7A63

accent

#633BED

background

#F7FAFC

surface

#EEF5F8

border

#C9CFD1

text

#0A1013

muted

#7C7F82

Preview Lab

Preview with #1F91B2

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

Preview Lab → · Contrast checker → · Palette generator →