#3F58C8#3F58C8

#3F58C8 is a mid, vivid blue. Relative luminance 0.122; OKLCH L 50.7% C 0.176 H 269.6°. Best body text is #FFFFFF at 6.10:1 contrast (WCAG AA passes).

Color values

HEX	#3F58C8
RGB	rgb(63, 88, 200)
HSL	hsl(229, 55%, 52%)
HSV	hsv(229, 69%, 78%)
CMYK	cmyk(68.5%, 56%, 0%, 21.6%)
CIE-LAB	lab(41.54, 27.84, -61.17)
CIE-LCH	lch(41.54, 67.21, 294.47°)
OKLab	oklab(50.66% -0.0014 -0.1761)
OKLCH	oklch(50.66% 0.176 269.6)
XYZ	xyz(15.9614, 12.2048, 56.1470)
Luminance	0.1221 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F58C8 #C8AF3F

analogous

#3F9DC8 #3F58C8 #6B3FC8

triadic

#3F58C8 #C83F58 #58C83F

tetradic

#3F58C8 #C83F9D #C8AF3F #3FC86B

square

#3F58C8 #C83F9D #C8AF3F #3FC86B

split-complementary

#3F58C8 #C86B3F #9DC83F

monochromatic

#1F2E6D #2D419D #3F58C8 #6F81D6 #9EABE3

Accessibility & contrast

On white

6.10

#3F58C8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.44

#3F58C8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F58C8

6.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F58C8	#FFFFFF	#000000	##FFFFFF
##3F58C8	1.00	6.10	3.44	6.10
#FFFFFF	6.10	1.00	21.00	1.00
#000000	3.44	21.00	1.00	21.00
##FFFFFF	6.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0068CC

Deuteranopia (green-blind)

#005CC6

Tritanopia (blue-blind)

#007387

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #3f58c8;
/* rgb */ color: rgb(63, 88, 200);
/* oklch */ color: oklch(50.7% 0.176 269.6);

Tailwind

colors: {
  custom: {
    50: '#8486d9',
    500: '#3f58c8',
    950: '#000000',
  },
}

SCSS

$custom: #3f58c8;
$custom-light: #8486d9;
$custom-dark: #000000;

JSON

{
  "hex": "#3f58c8",
  "rgb": {
    "r": 63,
    "g": 88,
    "b": 200
  },
  "hsl": {
    "h": 229.051,
    "s": 55.466,
    "l": 51.569
  },
  "oklch": {
    "l": 0.50661,
    "c": 0.17613,
    "h": 269.6
  },
  "luminance": 0.12206
}

Semantic roles & 50–950 ramp

primary

#3F58C8

secondary

#D0C593

accent

#C349DF

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #3F58C8

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

Preview Lab → · Contrast checker → · Palette generator →