#3955B8#3955B8

#3955B8 is a mid, vivid blue. Relative luminance 0.108; OKLCH L 48.5% C 0.160 H 268.0°. Best body text is #FFFFFF at 6.63:1 contrast (WCAG AA passes).

Color values

HEX	#3955B8
RGB	rgb(57, 85, 184)
HSL	hsl(227, 53%, 47%)
HSV	hsv(227, 69%, 72%)
CMYK	cmyk(69%, 53.8%, 0%, 27.8%)
CIE-LAB	lab(39.29, 23.12, -55.52)
CIE-LCH	lch(39.29, 60.14, 292.61°)
OKLab	oklab(48.52% -0.0055 -0.1597)
OKLCH	oklch(48.52% 0.16 268)
XYZ	xyz(13.5846, 10.8262, 46.7119)
Luminance	0.1083 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3955B8 #B89C39

analogous

#3994B8 #3955B8 #5D39B8

triadic

#3955B8 #B83955 #55B839

tetradic

#3955B8 #B83994 #B89C39 #39B85D

square

#3955B8 #B83994 #B89C39 #39B85D

split-complementary

#3955B8 #B85D39 #94B839

monochromatic

#1C2A5B #2B3F89 #3955B8 #6078CE #8FA0DC

Accessibility & contrast

On white

6.63

#3955B8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.17

#3955B8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3955B8

6.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3955B8	#FFFFFF	#000000	##FFFFFF
##3955B8	1.00	6.63	3.17	6.63
#FFFFFF	6.63	1.00	21.00	1.00
#000000	3.17	21.00	1.00	21.00
##FFFFFF	6.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0C63BB

Deuteranopia (green-blind)

#0057B6

Tritanopia (blue-blind)

#006D7E

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #3955b8;
/* rgb */ color: rgb(57, 85, 184);
/* oklch */ color: oklch(48.5% 0.160 268.0);

Tailwind

colors: {
  custom: {
    50: '#7f84ce',
    500: '#3955b8',
    950: '#000000',
  },
}

SCSS

$custom: #3955b8;
$custom-light: #7f84ce;
$custom-dark: #000000;

JSON

{
  "hex": "#3955b8",
  "rgb": {
    "r": 57,
    "g": 85,
    "b": 184
  },
  "hsl": {
    "h": 226.772,
    "s": 52.697,
    "l": 47.255
  },
  "oklch": {
    "l": 0.48517,
    "c": 0.15975,
    "h": 268
  },
  "luminance": 0.10828
}

Semantic roles & 50–950 ramp

primary

#3955B8

secondary

#C7B986

accent

#BC4CDC

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0A14

muted

#7C7C82

Preview Lab

Preview with #3955B8

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

Preview Lab → · Contrast checker → · Palette generator →