#4D51D9#4D51D9

#4D51D9 is a mid, highly saturated blue. Relative luminance 0.125; OKLCH L 51.6% C 0.203 H 275.3°. Best body text is #FFFFFF at 6.01:1 contrast (WCAG AA passes).

Color values

HEX	#4D51D9
RGB	rgb(77, 81, 217)
HSL	hsl(238, 65%, 58%)
HSV	hsv(238, 65%, 85%)
CMYK	cmyk(64.5%, 62.7%, 0%, 14.9%)
CIE-LAB	lab(41.95, 40.08, -70.24)
CIE-LCH	lch(41.95, 80.87, 299.71°)
OKLab	oklab(51.59% 0.019 -0.2025)
OKLCH	oklch(51.59% 0.203 275.3)
XYZ	xyz(18.5233, 12.4708, 67.0631)
Luminance	0.1247 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4D51D9 #D9D54D

analogous

#4D97D9 #4D51D9 #8F4DD9

triadic

#4D51D9 #D94D51 #51D94D

tetradic

#4D51D9 #D94D97 #D9D54D #4DD98F

square

#4D51D9 #D94D97 #D9D54D #4DD98F

split-complementary

#4D51D9 #D98F4D #97D94D

monochromatic

#1E218D #292DC0 #4D51D9 #7F82E4 #B2B4EF

Accessibility & contrast

On white

6.01

#4D51D9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.49

#4D51D9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4D51D9

6.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4D51D9	#FFFFFF	#000000	##FFFFFF
##4D51D9	1.00	6.01	3.49	6.01
#FFFFFF	6.01	1.00	21.00	1.00
#000000	3.49	21.00	1.00	21.00
##FFFFFF	6.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0069DD

Deuteranopia (green-blind)

#005DD6

Tritanopia (blue-blind)

#00748D

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #4d51d9;
/* rgb */ color: rgb(77, 81, 217);
/* oklch */ color: oklch(51.6% 0.203 275.3);

Tailwind

colors: {
  custom: {
    50: '#8e82e6',
    500: '#4d51d9',
    950: '#000000',
  },
}

SCSS

$custom: #4d51d9;
$custom-light: #8e82e6;
$custom-dark: #000000;

JSON

{
  "hex": "#4d51d9",
  "rgb": {
    "r": 77,
    "g": 81,
    "b": 217
  },
  "hsl": {
    "h": 238.286,
    "s": 64.815,
    "l": 57.647
  },
  "oklch": {
    "l": 0.51594,
    "c": 0.20337,
    "h": 275.3
  },
  "luminance": 0.12472
}

Semantic roles & 50–950 ramp

primary

#4D51D9

secondary

#DDDBA5

accent

#E340E8

background

#F9F8FE

surface

#F2EFFC

border

#CCCAD5

text

#0E0A16

muted

#7E7C84

Preview Lab

Preview with #4D51D9

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

Preview Lab → · Contrast checker → · Palette generator →