#3951B7#3951B7

#3951B7 is a mid, vivid blue. Relative luminance 0.102; OKLCH L 47.6% C 0.163 H 269.3°. Best body text is #FFFFFF at 6.92:1 contrast (WCAG AA passes).

Color values

HEX	#3951B7
RGB	rgb(57, 81, 183)
HSL	hsl(229, 53%, 47%)
HSV	hsv(229, 69%, 72%)
CMYK	cmyk(68.9%, 55.7%, 0%, 28.2%)
CIE-LAB	lab(38.15, 25.36, -56.77)
CIE-LCH	lch(38.15, 62.18, 294.07°)
OKLab	oklab(47.64% -0.0021 -0.1634)
OKLCH	oklch(47.64% 0.163 269.3)
XYZ	xyz(13.1741, 10.1723, 46.0597)
Luminance	0.1017 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3951B7 #B79F39

analogous

#3990B7 #3951B7 #6039B7

triadic

#3951B7 #B73951 #51B739

tetradic

#3951B7 #B73990 #B79F39 #39B760

square

#3951B7 #B73990 #B79F39 #39B760

split-complementary

#3951B7 #B76039 #90B739

monochromatic

#1C285A #2A3C88 #3951B7 #6075CD #8E9DDC

Accessibility & contrast

On white

6.92

#3951B7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.03

#3951B7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3951B7

6.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3951B7	#FFFFFF	#000000	##FFFFFF
##3951B7	1.00	6.92	3.03	6.92
#FFFFFF	6.92	1.00	21.00	1.00
#000000	3.03	21.00	1.00	21.00
##FFFFFF	6.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0060BB

Deuteranopia (green-blind)

#0054B5

Tritanopia (blue-blind)

#006A7C

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #3951b7;
/* rgb */ color: rgb(57, 81, 183);
/* oklch */ color: oklch(47.6% 0.163 269.3);

Tailwind

colors: {
  custom: {
    50: '#7f81cd',
    500: '#3951b7',
    950: '#000000',
  },
}

SCSS

$custom: #3951b7;
$custom-light: #7f81cd;
$custom-dark: #000000;

JSON

{
  "hex": "#3951b7",
  "rgb": {
    "r": 57,
    "g": 81,
    "b": 183
  },
  "hsl": {
    "h": 228.571,
    "s": 52.5,
    "l": 47.059
  },
  "oklch": {
    "l": 0.47639,
    "c": 0.16341,
    "h": 269.3
  },
  "luminance": 0.10174
}

Semantic roles & 50–950 ramp

primary

#3951B7

secondary

#C7BA85

accent

#C04CDC

background

#F8F7FC

surface

#EFEEF9

border

#CAC9D2

text

#0B0A14

muted

#7C7C82

Preview Lab

Preview with #3951B7

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

Preview Lab → · Contrast checker → · Palette generator →