#3B91CB#3B91CB

#3B91CB is a light, moderate cyan. Relative luminance 0.255; OKLCH L 63.1% C 0.120 H 241.9°. Best body text is #000000 at 6.10:1 contrast (WCAG AA passes).

Color values

HEX	#3B91CB
RGB	rgb(59, 145, 203)
HSL	hsl(204, 58%, 51%)
HSV	hsv(204, 71%, 80%)
CMYK	cmyk(70.9%, 28.6%, 0%, 20.4%)
CIE-LAB	lab(57.55, -6.79, -37.35)
CIE-LCH	lch(57.55, 37.96, 259.70°)
OKLab	oklab(63.05% -0.0564 -0.1055)
OKLCH	oklch(63.05% 0.12 241.9)
XYZ	xyz(22.7044, 25.4899, 60.2118)
Luminance	0.2549 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3B91CB #CB753B

analogous

#3BCBBD #3B91CB #3B49CB

triadic

#3B91CB #CB3B91 #91CB3B

tetradic

#3B91CB #BD3BCB #CB753B #49CB3B

square

#3B91CB #BD3BCB #CB753B #49CB3B

split-complementary

#3B91CB #CB3B49 #CBBD3B

monochromatic

#1D4E6E #2A709F #3B91CB #6BACD8 #9CC7E5

Accessibility & contrast

On white

3.44

#3B91CB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.10

#3B91CB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3B91CB

6.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B91CB	#FFFFFF	#000000	##000000
##3B91CB	1.00	3.44	6.10	6.10
#FFFFFF	3.44	1.00	21.00	21.00
#000000	6.10	21.00	1.00	1.00
##000000	6.10	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7692CE

Deuteranopia (green-blind)

#6384CA

Tritanopia (blue-blind)

#009FA5

Achromatopsia (no color)

#8A8A8A

Design tokens & code

CSS

--color: #3b91cb;
/* rgb */ color: rgb(59, 145, 203);
/* oklch */ color: oklch(63.1% 0.120 241.9);

Tailwind

colors: {
  custom: {
    50: '#82b1db',
    500: '#3b91cb',
    950: '#000000',
  },
}

SCSS

$custom: #3b91cb;
$custom-light: #82b1db;
$custom-dark: #000000;

JSON

{
  "hex": "#3b91cb",
  "rgb": {
    "r": 59,
    "g": 145,
    "b": 203
  },
  "hsl": {
    "h": 204.167,
    "s": 58.065,
    "l": 51.373
  },
  "oklch": {
    "l": 0.63054,
    "c": 0.11966,
    "h": 241.9
  },
  "luminance": 0.25492
}

Semantic roles & 50–950 ramp

primary

#3B91CB

secondary

#D1AB91

accent

#8547E1

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C1015

muted

#7D7F83

Preview Lab

Preview with #3B91CB

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

Preview Lab → · Contrast checker → · Palette generator →