#4091B1#4091B1

#4091B1 is a mid, moderate cyan. Relative luminance 0.245; OKLCH L 62.0% C 0.092 H 227.1°. Best body text is #000000 at 5.90:1 contrast (WCAG AA passes).

Color values

HEX	#4091B1
RGB	rgb(64, 145, 177)
HSL	hsl(197, 47%, 47%)
HSV	hsv(197, 64%, 69%)
CMYK	cmyk(63.8%, 18.1%, 0%, 30.6%)
CIE-LAB	lab(56.60, -14.67, -24.09)
CIE-LCH	lch(56.60, 28.21, 238.65°)
OKLab	oklab(61.98% -0.0624 -0.0673)
OKLCH	oklch(61.98% 0.092 227.1)
XYZ	xyz(20.1724, 24.5130, 45.2548)
Luminance	0.2452 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4091B1 #B16040

analogous

#40B199 #4091B1 #4059B1

triadic

#4091B1 #B14091 #91B140

tetradic

#4091B1 #9940B1 #B16040 #59B140

square

#4091B1 #9940B1 #B16040 #59B140

split-complementary

#4091B1 #B14059 #B19940

monochromatic

#1F4757 #306C84 #4091B1 #66ACC8 #93C5D8

Accessibility & contrast

On white

3.56

#4091B1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.90

#4091B1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4091B1

5.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4091B1	#FFFFFF	#000000	##000000
##4091B1	1.00	3.56	5.90	5.90
#FFFFFF	3.56	1.00	21.00	21.00
#000000	5.90	21.00	1.00	1.00
##000000	5.90	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#808EB3

Deuteranopia (green-blind)

#7083B1

Tritanopia (blue-blind)

#009A9B

Achromatopsia (no color)

#888888

Design tokens & code

CSS

--color: #4091b1;
/* rgb */ color: rgb(64, 145, 177);
/* oklch */ color: oklch(62.0% 0.092 227.1);

Tailwind

colors: {
  custom: {
    50: '#81b1c8',
    500: '#4091b1',
    950: '#000000',
  },
}

SCSS

$custom: #4091b1;
$custom-light: #81b1c8;
$custom-dark: #000000;

JSON

{
  "hex": "#4091b1",
  "rgb": {
    "r": 64,
    "g": 145,
    "b": 177
  },
  "hsl": {
    "h": 196.991,
    "s": 46.888,
    "l": 47.255
  },
  "oklch": {
    "l": 0.61976,
    "c": 0.09178,
    "h": 227.1
  },
  "luminance": 0.24515
}

Semantic roles & 50–950 ramp

primary

#4091B1

secondary

#C39A89

accent

#7751D7

background

#F8FAFC

surface

#EFF5F8

border

#CACFD1

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #4091B1

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

Preview Lab → · Contrast checker → · Palette generator →