#3957A5#3957A5

#3957A5 is a mid, vivid blue. Relative luminance 0.104; OKLCH L 47.6% C 0.130 H 265.8°. Best body text is #FFFFFF at 6.82:1 contrast (WCAG AA passes).

Color values

HEX	#3957A5
RGB	rgb(57, 87, 165)
HSL	hsl(223, 49%, 44%)
HSV	hsv(223, 65%, 65%)
CMYK	cmyk(65.5%, 47.3%, 0%, 35.3%)
CIE-LAB	lab(38.55, 14.88, -45.47)
CIE-LCH	lch(38.55, 47.84, 288.12°)
OKLab	oklab(47.55% -0.0095 -0.1301)
OKLCH	oklch(47.55% 0.13 265.8)
XYZ	xyz(11.8847, 10.4018, 36.9714)
Luminance	0.1040 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3957A5 #A58739

analogous

#398DA5 #3957A5 #5139A5

triadic

#3957A5 #A53957 #57A539

tetradic

#3957A5 #A5398D #A58739 #39A551

square

#3957A5 #A5398D #A58739 #39A551

split-complementary

#3957A5 #A55139 #8DA539

monochromatic

#1A274A #293F78 #3957A5 #5675C5 #849AD4

Accessibility & contrast

On white

6.82

#3957A5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.08

#3957A5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3957A5

6.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3957A5	#FFFFFF	#000000	##FFFFFF
##3957A5	1.00	6.82	3.08	6.82
#FFFFFF	6.82	1.00	21.00	1.00
#000000	3.08	21.00	1.00	21.00
##FFFFFF	6.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3060A8

Deuteranopia (green-blind)

#1B56A3

Tritanopia (blue-blind)

#006976

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #3957a5;
/* rgb */ color: rgb(57, 87, 165);
/* oklch */ color: oklch(47.6% 0.130 265.8);

Tailwind

colors: {
  custom: {
    50: '#7b85c0',
    500: '#3957a5',
    950: '#000000',
  },
}

SCSS

$custom: #3957a5;
$custom-light: #7b85c0;
$custom-dark: #000000;

JSON

{
  "hex": "#3957a5",
  "rgb": {
    "r": 57,
    "g": 87,
    "b": 165
  },
  "hsl": {
    "h": 223.333,
    "s": 48.649,
    "l": 43.529
  },
  "oklch": {
    "l": 0.47551,
    "c": 0.13041,
    "h": 265.8
  },
  "luminance": 0.10403
}

Semantic roles & 50–950 ramp

primary

#3957A5

secondary

#BEAC7B

accent

#B250D8

background

#F7F8FB

surface

#EEEFF7

border

#C9CAD0

text

#0A0B12

muted

#7C7C81

Preview Lab

Preview with #3957A5

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

Preview Lab → · Contrast checker → · Palette generator →