#4055B3#4055B3

#4055B3 is a mid, vivid blue. Relative luminance 0.108; OKLCH L 48.5% C 0.151 H 270.4°. Best body text is #FFFFFF at 6.63:1 contrast (WCAG AA passes).

Color values

HEX	#4055B3
RGB	rgb(64, 85, 179)
HSL	hsl(229, 47%, 48%)
HSV	hsv(229, 64%, 70%)
CMYK	cmyk(64.2%, 52.5%, 0%, 29.8%)
CIE-LAB	lab(39.31, 22.45, -52.52)
CIE-LCH	lch(39.31, 57.12, 293.14°)
OKLab	oklab(48.53% 0.001 -0.1507)
OKLCH	oklch(48.53% 0.151 270.4)
XYZ	xyz(13.4968, 10.8405, 44.0202)
Luminance	0.1084 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4055B3 #B39E40

analogous

#408FB3 #4055B3 #6440B3

triadic

#4055B3 #B34055 #55B340

tetradic

#4055B3 #B3408F #B39E40 #40B364

square

#4055B3 #B3408F #B39E40 #40B364

split-complementary

#4055B3 #B36440 #8FB340

monochromatic

#202A59 #304086 #4055B3 #6779C9 #94A1D9

Accessibility & contrast

On white

6.63

#4055B3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.17

#4055B3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4055B3

6.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4055B3	#FFFFFF	#000000	##FFFFFF
##4055B3	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)

#1B62B6

Deuteranopia (green-blind)

#0058B1

Tritanopia (blue-blind)

#006B7C

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #4055b3;
/* rgb */ color: rgb(64, 85, 179);
/* oklch */ color: oklch(48.5% 0.151 270.4);

Tailwind

colors: {
  custom: {
    50: '#8184ca',
    500: '#4055b3',
    950: '#000000',
  },
}

SCSS

$custom: #4055b3;
$custom-light: #8184ca;
$custom-dark: #000000;

JSON

{
  "hex": "#4055b3",
  "rgb": {
    "r": 64,
    "g": 85,
    "b": 179
  },
  "hsl": {
    "h": 229.043,
    "s": 47.325,
    "l": 47.647
  },
  "oklch": {
    "l": 0.48525,
    "c": 0.15068,
    "h": 270.4
  },
  "luminance": 0.10842
}

Semantic roles & 50–950 ramp

primary

#4055B3

secondary

#C4BA8A

accent

#BE51D7

background

#F8F8FC

surface

#EFEFF8

border

#CACAD1

text

#0B0A13

muted

#7C7C82

Preview Lab

Preview with #4055B3

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

Preview Lab → · Contrast checker → · Palette generator →