#3948B7#3948B7

#3948B7 is a mid, vivid blue. Relative luminance 0.089; OKLCH L 45.9% C 0.175 H 271.7°. Best body text is #FFFFFF at 7.54:1 contrast (WCAG AA passes).

Color values

HEX	#3948B7
RGB	rgb(57, 72, 183)
HSL	hsl(233, 53%, 47%)
HSV	hsv(233, 69%, 72%)
CMYK	cmyk(68.9%, 60.7%, 0%, 28.2%)
CIE-LAB	lab(35.83, 31.18, -60.54)
CIE-LCH	lch(35.83, 68.10, 297.25°)
OKLab	oklab(45.91% 0.0053 -0.1746)
OKLCH	oklch(45.91% 0.175 271.7)
XYZ	xyz(12.5491, 8.9223, 45.8514)
Luminance	0.0892 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3948B7 #B7A839

analogous

#3987B7 #3948B7 #6939B7

triadic

#3948B7 #B73948 #48B739

tetradic

#3948B7 #B73987 #B7A839 #39B769

square

#3948B7 #B73987 #B7A839 #39B769

split-complementary

#3948B7 #B76939 #87B739

monochromatic

#1C235A #2A3688 #3948B7 #606DCD #8E98DC

Accessibility & contrast

On white

7.54

#3948B7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.78

#3948B7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3948B7

7.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3948B7	#FFFFFF	#000000	##FFFFFF
##3948B7	1.00	7.54	2.78	7.54
#FFFFFF	7.54	1.00	21.00	1.00
#000000	2.78	21.00	1.00	21.00
##FFFFFF	7.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005ABB

Deuteranopia (green-blind)

#004FB5

Tritanopia (blue-blind)

#006478

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #3948b7;
/* rgb */ color: rgb(57, 72, 183);
/* oklch */ color: oklch(45.9% 0.175 271.7);

Tailwind

colors: {
  custom: {
    50: '#7f7bcd',
    500: '#3948b7',
    950: '#000000',
  },
}

SCSS

$custom: #3948b7;
$custom-light: #7f7bcd;
$custom-dark: #000000;

JSON

{
  "hex": "#3948b7",
  "rgb": {
    "r": 57,
    "g": 72,
    "b": 183
  },
  "hsl": {
    "h": 232.857,
    "s": 52.5,
    "l": 47.059
  },
  "oklch": {
    "l": 0.45913,
    "c": 0.17466,
    "h": 271.7
  },
  "luminance": 0.08923
}

Semantic roles & 50–950 ramp

primary

#3948B7

secondary

#C7BF85

accent

#CB4CDC

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0B0914

muted

#7C7B82

Preview Lab

Preview with #3948B7

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

Preview Lab → · Contrast checker → · Palette generator →