#3F7EB5#3F7EB5

#3F7EB5 is a mid, moderate cyan. Relative luminance 0.193; OKLCH L 57.6% C 0.107 H 247.3°. Best body text is #000000 at 4.86:1 contrast (WCAG AA passes).

Color values

HEX	#3F7EB5
RGB	rgb(63, 126, 181)
HSL	hsl(208, 48%, 48%)
HSV	hsv(208, 65%, 71%)
CMYK	cmyk(65.2%, 30.4%, 0%, 29%)
CIE-LAB	lab(51.05, -2.69, -35.00)
CIE-LCH	lch(51.05, 35.10, 265.60°)
OKLab	oklab(57.62% -0.0414 -0.0988)
OKLCH	oklch(57.62% 0.107 247.3)
XYZ	xyz(17.8481, 19.3129, 46.4943)
Luminance	0.1931 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F7EB5 #B5763F

analogous

#3FB5B1 #3F7EB5 #3F43B5

triadic

#3F7EB5 #B53F7E #7EB53F

tetradic

#3F7EB5 #B13FB5 #B5763F #43B53F

square

#3F7EB5 #B13FB5 #B5763F #43B53F

split-complementary

#3F7EB5 #B53F43 #B5B13F

monochromatic

#1F3F5A #2F5E88 #3F7EB5 #679CCA #94BADA

Accessibility & contrast

On white

4.32

#3F7EB5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.86

#3F7EB5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F7EB5

4.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F7EB5	#FFFFFF	#000000	##000000
##3F7EB5	1.00	4.32	4.86	4.86
#FFFFFF	4.32	1.00	21.00	21.00
#000000	4.86	21.00	1.00	1.00
##000000	4.86	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6680B7

Deuteranopia (green-blind)

#5674B4

Tritanopia (blue-blind)

#008B91

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #3f7eb5;
/* rgb */ color: rgb(63, 126, 181);
/* oklch */ color: oklch(57.6% 0.107 247.3);

Tailwind

colors: {
  custom: {
    50: '#80a3cb',
    500: '#3f7eb5',
    950: '#000000',
  },
}

SCSS

$custom: #3f7eb5;
$custom-light: #80a3cb;
$custom-dark: #000000;

JSON

{
  "hex": "#3f7eb5",
  "rgb": {
    "r": 63,
    "g": 126,
    "b": 181
  },
  "hsl": {
    "h": 207.966,
    "s": 48.361,
    "l": 47.843
  },
  "oklch": {
    "l": 0.57624,
    "c": 0.10715,
    "h": 247.3
  },
  "luminance": 0.19315
}

Semantic roles & 50–950 ramp

primary

#3F7EB5

secondary

#C5A68A

accent

#8F50D8

background

#F8FAFC

surface

#EFF3F8

border

#CACDD1

text

#0B0F13

muted

#7C7F82

Preview Lab

Preview with #3F7EB5

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

Preview Lab → · Contrast checker → · Palette generator →