#3B91DB#3B91DB

#3B91DB is a light, vivid cyan. Relative luminance 0.263; OKLCH L 63.9% C 0.138 H 248.0°. Best body text is #000000 at 6.26:1 contrast (WCAG AA passes).

Color values

HEX	#3B91DB
RGB	rgb(59, 145, 219)
HSL	hsl(208, 69%, 55%)
HSV	hsv(208, 73%, 86%)
CMYK	cmyk(73.1%, 33.8%, 0%, 14.1%)
CIE-LAB	lab(58.31, -1.20, -45.12)
CIE-LCH	lch(58.31, 45.14, 268.48°)
OKLab	oklab(63.91% -0.0517 -0.1281)
OKLCH	oklch(63.91% 0.138 248)
XYZ	xyz(24.7104, 26.2923, 70.7767)
Luminance	0.2630 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3B91DB #DB853B

analogous

#3BDBD5 #3B91DB #3B41DB

triadic

#3B91DB #DB3B91 #91DB3B

tetradic

#3B91DB #D53BDB #DB853B #41DB3B

square

#3B91DB #D53BDB #DB853B #41DB3B

split-complementary

#3B91DB #DB3B41 #DBD53B

monochromatic

#185283 #2272B7 #3B91DB #6FAEE4 #A2CBEE

Accessibility & contrast

On white

3.36

#3B91DB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.26

#3B91DB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3B91DB

6.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B91DB	#FFFFFF	#000000	##000000
##3B91DB	1.00	3.36	6.26	6.26
#FFFFFF	3.36	1.00	21.00	21.00
#000000	6.26	21.00	1.00	1.00
##000000	6.26	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6F94DE

Deuteranopia (green-blind)

#5885DA

Tritanopia (blue-blind)

#00A3AC

Achromatopsia (no color)

#8C8C8C

Design tokens & code

CSS

--color: #3b91db;
/* rgb */ color: rgb(59, 145, 219);
/* oklch */ color: oklch(63.9% 0.138 248.0);

Tailwind

colors: {
  custom: {
    50: '#85b0e6',
    500: '#3b91db',
    950: '#000000',
  },
}

SCSS

$custom: #3b91db;
$custom-light: #85b0e6;
$custom-dark: #000000;

JSON

{
  "hex": "#3b91db",
  "rgb": {
    "r": 59,
    "g": 145,
    "b": 219
  },
  "hsl": {
    "h": 207.75,
    "s": 68.966,
    "l": 54.51
  },
  "oklch": {
    "l": 0.63907,
    "c": 0.1382,
    "h": 248
  },
  "luminance": 0.26295
}

Semantic roles & 50–950 ramp

primary

#3B91DB

secondary

#DBB697

accent

#8D3CEC

background

#F8FAFE

surface

#F0F4FC

border

#CBCED5

text

#0C1016

muted

#7D7F84

Preview Lab

Preview with #3B91DB

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

Preview Lab → · Contrast checker → · Palette generator →