#3F91D9#3F91D9

#3F91D9 is a light, vivid cyan. Relative luminance 0.263; OKLCH L 63.9% C 0.134 H 248.2°. Best body text is #000000 at 6.26:1 contrast (WCAG AA passes).

Color values

HEX	#3F91D9
RGB	rgb(63, 145, 217)
HSL	hsl(208, 67%, 55%)
HSV	hsv(208, 71%, 85%)
CMYK	cmyk(71%, 33.2%, 0%, 14.9%)
CIE-LAB	lab(58.33, -1.36, -43.96)
CIE-LCH	lch(58.33, 43.99, 268.23°)
OKLab	oklab(63.93% -0.0499 -0.1247)
OKLCH	oklch(63.93% 0.134 248.2)
XYZ	xyz(24.6949, 26.3146, 69.4099)
Luminance	0.2632 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F91D9 #D9873F

analogous

#3FD9D4 #3F91D9 #3F44D9

triadic

#3F91D9 #D93F91 #91D93F

tetradic

#3F91D9 #D43FD9 #D9873F #44D93F

square

#3F91D9 #D43FD9 #D9873F #44D93F

split-complementary

#3F91D9 #D93F44 #D9D43F

monochromatic

#1A5284 #2472B7 #3F91D9 #72AEE3 #A5CCED

Accessibility & contrast

On white

3.35

#3F91D9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.26

#3F91D9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F91D9

6.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F91D9	#FFFFFF	#000000	##000000
##3F91D9	1.00	3.35	6.26	6.26
#FFFFFF	3.35	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)

#7094DC

Deuteranopia (green-blind)

#5B86D8

Tritanopia (blue-blind)

#00A2AB

Achromatopsia (no color)

#8C8C8C

Design tokens & code

CSS

--color: #3f91d9;
/* rgb */ color: rgb(63, 145, 217);
/* oklch */ color: oklch(63.9% 0.134 248.2);

Tailwind

colors: {
  custom: {
    50: '#86b0e5',
    500: '#3f91d9',
    950: '#000000',
  },
}

SCSS

$custom: #3f91d9;
$custom-light: #86b0e5;
$custom-dark: #000000;

JSON

{
  "hex": "#3f91d9",
  "rgb": {
    "r": 63,
    "g": 145,
    "b": 217
  },
  "hsl": {
    "h": 208.052,
    "s": 66.957,
    "l": 54.902
  },
  "oklch": {
    "l": 0.63925,
    "c": 0.13436,
    "h": 248.2
  },
  "luminance": 0.26317
}

Semantic roles & 50–950 ramp

primary

#3F91D9

secondary

#DAB89A

accent

#8E3EEA

background

#F8FAFE

surface

#F0F4FC

border

#CBCED5

text

#0D1016

muted

#7D7F84

Preview Lab

Preview with #3F91D9

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

Preview Lab → · Contrast checker → · Palette generator →