#3F7FB4#3F7FB4

#3F7FB4 is a mid, moderate cyan. Relative luminance 0.195; OKLCH L 57.8% C 0.105 H 246.0°. Best body text is #000000 at 4.91:1 contrast (WCAG AA passes).

Color values

HEX	#3F7FB4
RGB	rgb(63, 127, 180)
HSL	hsl(207, 48%, 48%)
HSV	hsv(207, 65%, 71%)
CMYK	cmyk(65%, 29.4%, 0%, 29.4%)
CIE-LAB	lab(51.30, -3.63, -34.03)
CIE-LCH	lch(51.30, 34.23, 263.92°)
OKLab	oklab(57.8% -0.0428 -0.096)
OKLCH	oklch(57.8% 0.105 246)
XYZ	xyz(17.8744, 19.5290, 45.9986)
Luminance	0.1953 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F7FB4 #B4743F

analogous

#3FB4AE #3F7FB4 #3F45B4

triadic

#3F7FB4 #B43F7F #7FB43F

tetradic

#3F7FB4 #AE3FB4 #B4743F #45B43F

square

#3F7FB4 #AE3FB4 #B4743F #45B43F

split-complementary

#3F7FB4 #B43F45 #B4AE3F

monochromatic

#1F3F59 #2F5F87 #3F7FB4 #679DCA #94BADA

Accessibility & contrast

On white

4.28

#3F7FB4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.91

#3F7FB4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F7FB4

4.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F7FB4	#FFFFFF	#000000	##000000
##3F7FB4	1.00	4.28	4.91	4.91
#FFFFFF	4.28	1.00	21.00	21.00
#000000	4.91	21.00	1.00	1.00
##000000	4.91	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6881B6

Deuteranopia (green-blind)

#5875B3

Tritanopia (blue-blind)

#008C92

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #3f7fb4;
/* rgb */ color: rgb(63, 127, 180);
/* oklch */ color: oklch(57.8% 0.105 246.0);

Tailwind

colors: {
  custom: {
    50: '#80a3ca',
    500: '#3f7fb4',
    950: '#000000',
  },
}

SCSS

$custom: #3f7fb4;
$custom-light: #80a3ca;
$custom-dark: #000000;

JSON

{
  "hex": "#3f7fb4",
  "rgb": {
    "r": 63,
    "g": 127,
    "b": 180
  },
  "hsl": {
    "h": 207.179,
    "s": 48.148,
    "l": 47.647
  },
  "oklch": {
    "l": 0.57805,
    "c": 0.1051,
    "h": 246
  },
  "luminance": 0.19531
}

Semantic roles & 50–950 ramp

primary

#3F7FB4

secondary

#C5A58A

accent

#8E50D8

background

#F8FAFC

surface

#EFF3F8

border

#CACDD1

text

#0B0F13

muted

#7C7F82

Preview Lab

Preview with #3F7FB4

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

Preview Lab → · Contrast checker → · Palette generator →