#1B91B1#1B91B1

#1B91B1 is a mid, moderate cyan. Relative luminance 0.237; OKLCH L 61.0% C 0.107 H 222.0°. Best body text is #000000 at 5.73:1 contrast (WCAG AA passes).

Color values

HEX	#1B91B1
RGB	rgb(27, 145, 177)
HSL	hsl(193, 74%, 40%)
HSV	hsv(193, 85%, 69%)
CMYK	cmyk(84.7%, 18.1%, 0%, 30.6%)
CIE-LAB	lab(55.74, -19.41, -25.48)
CIE-LCH	lch(55.74, 32.03, 232.69°)
OKLab	oklab(61.05% -0.0794 -0.0715)
OKLCH	oklch(61.05% 0.107 222)
XYZ	xyz(18.5098, 23.6558, 45.1769)
Luminance	0.2366 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B91B1 #B13B1B

analogous

#1BB186 #1B91B1 #1B46B1

triadic

#1B91B1 #B11B91 #91B11B

tetradic

#1B91B1 #861BB1 #B13B1B #46B11B

square

#1B91B1 #861BB1 #B13B1B #46B11B

split-complementary

#1B91B1 #B11B46 #B1861B

monochromatic

#0B3A47 #13657C #1B91B1 #2BB8DF #60CAE7

Accessibility & contrast

On white

3.66

#1B91B1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.73

#1B91B1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #1B91B1

5.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B91B1	#FFFFFF	#000000	##000000
##1B91B1	1.00	3.66	5.73	5.73
#FFFFFF	3.66	1.00	21.00	21.00
#000000	5.73	21.00	1.00	1.00
##000000	5.73	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7E8DB3

Deuteranopia (green-blind)

#6B80B1

Tritanopia (blue-blind)

#009B9B

Achromatopsia (no color)

#868686

Design tokens & code

CSS

--color: #1b91b1;
/* rgb */ color: rgb(27, 145, 177);
/* oklch */ color: oklch(61.0% 0.107 222.0);

Tailwind

colors: {
  custom: {
    50: '#74b1c8',
    500: '#1b91b1',
    950: '#000000',
  },
}

SCSS

$custom: #1b91b1;
$custom-light: #74b1c8;
$custom-dark: #000000;

JSON

{
  "hex": "#1b91b1",
  "rgb": {
    "r": 27,
    "g": 145,
    "b": 177
  },
  "hsl": {
    "h": 192.8,
    "s": 73.529,
    "l": 40
  },
  "oklch": {
    "l": 0.61046,
    "c": 0.10683,
    "h": 222
  },
  "luminance": 0.23658
}

Semantic roles & 50–950 ramp

primary

#1B91B1

secondary

#CB745D

accent

#5F38F0

background

#F7FAFC

surface

#EEF5F8

border

#C9CFD1

text

#0A1013

muted

#7C7F82

Preview Lab

Preview with #1B91B1

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

Preview Lab → · Contrast checker → · Palette generator →