#3F7DBD#3F7DBD

#3F7DBD is a mid, moderate cyan. Relative luminance 0.194; OKLCH L 57.8% C 0.118 H 251.2°. Best body text is #000000 at 4.88:1 contrast (WCAG AA passes).

Color values

HEX	#3F7DBD
RGB	rgb(63, 125, 189)
HSL	hsl(210, 50%, 49%)
HSV	hsv(210, 67%, 74%)
CMYK	cmyk(66.7%, 33.9%, 0%, 25.9%)
CIE-LAB	lab(51.15, 0.68, -39.45)
CIE-LCH	lch(51.15, 39.45, 270.98°)
OKLab	oklab(57.83% -0.038 -0.1118)
OKLCH	oklch(57.83% 0.118 251.2)
XYZ	xyz(18.5654, 19.3962, 50.8997)
Luminance	0.1940 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F7DBD #BD7F3F

analogous

#3FBCBD #3F7DBD #403FBD

triadic

#3F7DBD #BD3F7D #7DBD3F

tetradic

#3F7DBD #BD3FBC #BD7F3F #3FBD40

square

#3F7DBD #BD3FBC #BD7F3F #3FBD40

split-complementary

#3F7DBD #BD403F #BCBD3F

monochromatic

#204061 #305F8F #3F7DBD #6B9CCE #99BBDD

Accessibility & contrast

On white

4.30

#3F7DBD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.88

#3F7DBD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F7DBD

4.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F7DBD	#FFFFFF	#000000	##000000
##3F7DBD	1.00	4.30	4.88	4.88
#FFFFFF	4.30	1.00	21.00	21.00
#000000	4.88	21.00	1.00	1.00
##000000	4.88	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6180C0

Deuteranopia (green-blind)

#4F74BC

Tritanopia (blue-blind)

#008C94

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #3f7dbd;
/* rgb */ color: rgb(63, 125, 189);
/* oklch */ color: oklch(57.8% 0.118 251.2);

Tailwind

colors: {
  custom: {
    50: '#81a2d1',
    500: '#3f7dbd',
    950: '#000000',
  },
}

SCSS

$custom: #3f7dbd;
$custom-light: #81a2d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3f7dbd",
  "rgb": {
    "r": 63,
    "g": 125,
    "b": 189
  },
  "hsl": {
    "h": 210.476,
    "s": 50,
    "l": 49.412
  },
  "oklch": {
    "l": 0.57828,
    "c": 0.11808,
    "h": 251.2
  },
  "luminance": 0.19398
}

Semantic roles & 50–950 ramp

primary

#3F7DBD

secondary

#C9AC8F

accent

#954EDA

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0B0F14

muted

#7C7E82

Preview Lab

Preview with #3F7DBD

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

Preview Lab → · Contrast checker → · Palette generator →