#4057B2#4057B2

#4057B2 is a mid, vivid blue. Relative luminance 0.111; OKLCH L 48.9% C 0.147 H 269.6°. Best body text is #FFFFFF at 6.51:1 contrast (WCAG AA passes).

Color values

HEX	#4057B2
RGB	rgb(64, 87, 178)
HSL	hsl(228, 47%, 47%)
HSV	hsv(228, 64%, 70%)
CMYK	cmyk(64%, 51.1%, 0%, 30.2%)
CIE-LAB	lab(39.78, 20.80, -51.18)
CIE-LCH	lch(39.78, 55.24, 292.12°)
OKLab	oklab(48.86% -0.001 -0.1467)
OKLCH	oklch(48.86% 0.147 269.6)
XYZ	xyz(13.5557, 11.1195, 43.5428)
Luminance	0.1112 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4057B2 #B29B40

analogous

#4090B2 #4057B2 #6240B2

triadic

#4057B2 #B24057 #57B240

tetradic

#4057B2 #B24090 #B29B40 #40B262

square

#4057B2 #B24090 #B29B40 #40B262

split-complementary

#4057B2 #B26240 #90B240

monochromatic

#202B58 #304185 #4057B2 #677BC8 #94A2D8

Accessibility & contrast

On white

6.51

#4057B2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.22

#4057B2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4057B2

6.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4057B2	#FFFFFF	#000000	##FFFFFF
##4057B2	1.00	6.51	3.22	6.51
#FFFFFF	6.51	1.00	21.00	1.00
#000000	3.22	21.00	1.00	21.00
##FFFFFF	6.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2363B5

Deuteranopia (green-blind)

#0059B0

Tritanopia (blue-blind)

#006C7C

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #4057b2;
/* rgb */ color: rgb(64, 87, 178);
/* oklch */ color: oklch(48.9% 0.147 269.6);

Tailwind

colors: {
  custom: {
    50: '#8086ca',
    500: '#4057b2',
    950: '#000000',
  },
}

SCSS

$custom: #4057b2;
$custom-light: #8086ca;
$custom-dark: #000000;

JSON

{
  "hex": "#4057b2",
  "rgb": {
    "r": 64,
    "g": 87,
    "b": 178
  },
  "hsl": {
    "h": 227.895,
    "s": 47.107,
    "l": 47.451
  },
  "oklch": {
    "l": 0.48859,
    "c": 0.14669,
    "h": 269.6
  },
  "luminance": 0.11121
}

Semantic roles & 50–950 ramp

primary

#4057B2

secondary

#C4B88A

accent

#BC51D7

background

#F8F8FC

surface

#EFEFF8

border

#CACAD1

text

#0B0B13

muted

#7C7C82

Preview Lab

Preview with #4057B2

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

Preview Lab → · Contrast checker → · Palette generator →