#4057AD#4057AD

#4057AD is a mid, vivid blue. Relative luminance 0.109; OKLCH L 48.5% C 0.140 H 269.4°. Best body text is #FFFFFF at 6.59:1 contrast (WCAG AA passes).

Color values

HEX	#4057AD
RGB	rgb(64, 87, 173)
HSL	hsl(227, 46%, 46%)
HSV	hsv(227, 63%, 68%)
CMYK	cmyk(63%, 49.7%, 0%, 32.2%)
CIE-LAB	lab(39.45, 19.02, -48.76)
CIE-LCH	lch(39.45, 52.34, 291.31°)
OKLab	oklab(48.5% -0.0015 -0.1396)
OKLCH	oklch(48.5% 0.14 269.4)
XYZ	xyz(13.0628, 10.9224, 40.9469)
Luminance	0.1092 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4057AD #AD9640

analogous

#408EAD #4057AD #5F40AD

triadic

#4057AD #AD4057 #57AD40

tetradic

#4057AD #AD408E #AD9640 #40AD5F

square

#4057AD #AD408E #AD9640 #40AD5F

split-complementary

#4057AD #AD5F40 #8EAD40

monochromatic

#1F2A54 #2F4180 #4057AD #6479C6 #91A0D6

Accessibility & contrast

On white

6.59

#4057AD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.18

#4057AD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4057AD

6.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4057AD	#FFFFFF	#000000	##FFFFFF
##4057AD	1.00	6.59	3.18	6.59
#FFFFFF	6.59	1.00	21.00	1.00
#000000	3.18	21.00	1.00	21.00
##FFFFFF	6.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2962B0

Deuteranopia (green-blind)

#1158AB

Tritanopia (blue-blind)

#006B7A

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #4057ad;
/* rgb */ color: rgb(64, 87, 173);
/* oklch */ color: oklch(48.5% 0.140 269.4);

Tailwind

colors: {
  custom: {
    50: '#8086c6',
    500: '#4057ad',
    950: '#000000',
  },
}

SCSS

$custom: #4057ad;
$custom-light: #8086c6;
$custom-dark: #000000;

JSON

{
  "hex": "#4057ad",
  "rgb": {
    "r": 64,
    "g": 87,
    "b": 173
  },
  "hsl": {
    "h": 227.339,
    "s": 45.992,
    "l": 46.471
  },
  "oklch": {
    "l": 0.48501,
    "c": 0.13959,
    "h": 269.4
  },
  "luminance": 0.10924
}

Semantic roles & 50–950 ramp

primary

#4057AD

secondary

#C2B587

accent

#BA52D6

background

#F8F8FC

surface

#EFEFF8

border

#CACAD1

text

#0B0B13

muted

#7C7C82

Preview Lab

Preview with #4057AD

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

Preview Lab → · Contrast checker → · Palette generator →