#3957B7#3957B7

#3957B7 is a mid, vivid blue. Relative luminance 0.111; OKLCH L 48.8% C 0.156 H 267.3°. Best body text is #FFFFFF at 6.52:1 contrast (WCAG AA passes).

Color values

HEX	#3957B7
RGB	rgb(57, 87, 183)
HSL	hsl(226, 53%, 47%)
HSV	hsv(226, 69%, 72%)
CMYK	cmyk(68.9%, 52.5%, 0%, 28.2%)
CIE-LAB	lab(39.75, 21.45, -54.18)
CIE-LCH	lch(39.75, 58.27, 291.60°)
OKLab	oklab(48.85% -0.0073 -0.1557)
OKLCH	oklch(48.85% 0.156 267.3)
XYZ	xyz(13.6398, 11.1038, 46.2150)
Luminance	0.1110 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3957B7 #B79939

analogous

#3996B7 #3957B7 #5A39B7

triadic

#3957B7 #B73957 #57B739

tetradic

#3957B7 #B73996 #B79939 #39B75A

square

#3957B7 #B73996 #B79939 #39B75A

split-complementary

#3957B7 #B75A39 #96B739

monochromatic

#1C2B5A #2A4188 #3957B7 #607ACD #8EA1DC

Accessibility & contrast

On white

6.52

#3957B7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.22

#3957B7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3957B7

6.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3957B7	#FFFFFF	#000000	##FFFFFF
##3957B7	1.00	6.52	3.22	6.52
#FFFFFF	6.52	1.00	21.00	1.00
#000000	3.22	21.00	1.00	21.00
##FFFFFF	6.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1964BA

Deuteranopia (green-blind)

#0058B5

Tritanopia (blue-blind)

#006E7E

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #3957b7;
/* rgb */ color: rgb(57, 87, 183);
/* oklch */ color: oklch(48.8% 0.156 267.3);

Tailwind

colors: {
  custom: {
    50: '#7e85cd',
    500: '#3957b7',
    950: '#000000',
  },
}

SCSS

$custom: #3957b7;
$custom-light: #7e85cd;
$custom-dark: #000000;

JSON

{
  "hex": "#3957b7",
  "rgb": {
    "r": 57,
    "g": 87,
    "b": 183
  },
  "hsl": {
    "h": 225.714,
    "s": 52.5,
    "l": 47.059
  },
  "oklch": {
    "l": 0.48849,
    "c": 0.15584,
    "h": 267.3
  },
  "luminance": 0.11105
}

Semantic roles & 50–950 ramp

primary

#3957B7

secondary

#C7B785

accent

#BA4CDC

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0B13

muted

#7C7C82

Preview Lab

Preview with #3957B7

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

Preview Lab → · Contrast checker → · Palette generator →