#3957DA#3957DA

#3957DA is a mid, highly saturated blue. Relative luminance 0.127; OKLCH L 51.6% C 0.203 H 268.3°. Best body text is #FFFFFF at 5.92:1 contrast (WCAG AA passes).

Color values

HEX	#3957DA
RGB	rgb(57, 87, 218)
HSL	hsl(229, 69%, 54%)
HSV	hsv(229, 74%, 85%)
CMYK	cmyk(73.9%, 60.1%, 0%, 14.5%)
CIE-LAB	lab(42.38, 34.14, -70.17)
CIE-LCH	lch(42.38, 78.03, 295.95°)
OKLab	oklab(51.64% -0.0058 -0.2027)
OKLCH	oklch(51.64% 0.203 268.3)
XYZ	xyz(17.7460, 12.7463, 67.8411)
Luminance	0.1275 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3957DA #DABC39

analogous

#39A8DA #3957DA #6C39DA

triadic

#3957DA #DA3957 #57DA39

tetradic

#3957DA #DA39A8 #DABC39 #39DA6C

square

#3957DA #DA39A8 #DABC39 #39DA6C

split-complementary

#3957DA #DA6C39 #A8DA39

monochromatic

#182C81 #223DB4 #3957DA #6D83E4 #A0AFED

Accessibility & contrast

On white

5.92

#3957DA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.55

#3957DA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3957DA

5.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3957DA	#FFFFFF	#000000	##FFFFFF
##3957DA	1.00	5.92	3.55	5.92
#FFFFFF	5.92	1.00	21.00	1.00
#000000	3.55	21.00	1.00	21.00
##FFFFFF	5.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006CDE

Deuteranopia (green-blind)

#005DD7

Tritanopia (blue-blind)

#007890

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #3957da;
/* rgb */ color: rgb(57, 87, 218);
/* oklch */ color: oklch(51.6% 0.203 268.3);

Tailwind

colors: {
  custom: {
    50: '#8686e6',
    500: '#3957da',
    950: '#000000',
  },
}

SCSS

$custom: #3957da;
$custom-light: #8686e6;
$custom-dark: #000000;

JSON

{
  "hex": "#3957da",
  "rgb": {
    "r": 57,
    "g": 87,
    "b": 218
  },
  "hsl": {
    "h": 228.82,
    "s": 68.511,
    "l": 53.922
  },
  "oklch": {
    "l": 0.5164,
    "c": 0.20276,
    "h": 268.3
  },
  "luminance": 0.12748
}

Semantic roles & 50–950 ramp

primary

#3957DA

secondary

#DACD95

accent

#CB3CEB

background

#F9F8FE

surface

#F1EFFD

border

#CBCAD5

text

#0D0B16

muted

#7E7C84

Preview Lab

Preview with #3957DA

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

Preview Lab → · Contrast checker → · Palette generator →