#5B91BF#5B91BF

#5B91BF is a light, moderate cyan. Relative luminance 0.262; OKLCH L 63.8% C 0.090 H 245.6°. Best body text is #000000 at 6.25:1 contrast (WCAG AA passes).

Color values

HEX	#5B91BF
RGB	rgb(91, 145, 191)
HSL	hsl(208, 44%, 55%)
HSV	hsv(208, 52%, 75%)
CMYK	cmyk(52.4%, 24.1%, 0%, 25.1%)
CIE-LAB	lab(58.26, -4.75, -29.38)
CIE-LCH	lch(58.26, 29.76, 260.81°)
OKLab	oklab(63.78% -0.0373 -0.0821)
OKLCH	oklch(63.78% 0.09 245.6)
XYZ	xyz(23.8404, 26.2346, 53.0876)
Luminance	0.2624 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5B91BF #BF895B

analogous

#5BBFBB #5B91BF #5B5FBF

triadic

#5B91BF #BF5B91 #91BF5B

tetradic

#5B91BF #BB5BBF #BF895B #5FBF5B

square

#5B91BF #BB5BBF #BF895B #5FBF5B

split-complementary

#5B91BF #BF5B5F #BFBB5B

monochromatic

#2D5373 #3E729F #5B91BF #87AFD0 #B3CCE1

Accessibility & contrast

On white

3.36

#5B91BF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.25

#5B91BF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5B91BF

6.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5B91BF	#FFFFFF	#000000	##000000
##5B91BF	1.00	3.36	6.25	6.25
#FFFFFF	3.36	1.00	21.00	21.00
#000000	6.25	21.00	1.00	1.00
##000000	6.25	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7E92C1

Deuteranopia (green-blind)

#7088BE

Tritanopia (blue-blind)

#239CA1

Achromatopsia (no color)

#8C8C8C

Design tokens & code

CSS

--color: #5b91bf;
/* rgb */ color: rgb(91, 145, 191);
/* oklch */ color: oklch(63.8% 0.090 245.6);

Tailwind

colors: {
  custom: {
    50: '#90b1d2',
    500: '#5b91bf',
    950: '#000000',
  },
}

SCSS

$custom: #5b91bf;
$custom-light: #90b1d2;
$custom-dark: #000000;

JSON

{
  "hex": "#5b91bf",
  "rgb": {
    "r": 91,
    "g": 145,
    "b": 191
  },
  "hsl": {
    "h": 207.6,
    "s": 43.86,
    "l": 55.294
  },
  "oklch": {
    "l": 0.63783,
    "c": 0.09021,
    "h": 245.6
  },
  "luminance": 0.26237
}

Semantic roles & 50–950 ramp

primary

#5B91BF

secondary

#D0B9A6

accent

#8F54D4

background

#F9FAFC

surface

#F1F4F9

border

#CBCED2

text

#0D1014

muted

#7E7F82

Preview Lab

Preview with #5B91BF

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

Preview Lab → · Contrast checker → · Palette generator →