#4057AF#4057AF

#4057AF is a mid, vivid blue. Relative luminance 0.110; OKLCH L 48.6% C 0.142 H 269.5°. Best body text is #FFFFFF at 6.56:1 contrast (WCAG AA passes).

Color values

HEX	#4057AF
RGB	rgb(64, 87, 175)
HSL	hsl(228, 46%, 47%)
HSV	hsv(228, 63%, 69%)
CMYK	cmyk(63.4%, 50.3%, 0%, 31.4%)
CIE-LAB	lab(39.58, 19.73, -49.73)
CIE-LCH	lch(39.58, 53.50, 291.64°)
OKLab	oklab(48.64% -0.0013 -0.1424)
OKLCH	oklch(48.64% 0.142 269.5)
XYZ	xyz(13.2578, 11.0004, 41.9737)
Luminance	0.1100 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4057AF #AF9840

analogous

#408FAF #4057AF #6140AF

triadic

#4057AF #AF4057 #57AF40

tetradic

#4057AF #AF408F #AF9840 #40AF61

square

#4057AF #AF408F #AF9840 #40AF61

split-complementary

#4057AF #AF6140 #8FAF40

monochromatic

#1F2A55 #304182 #4057AF #657AC7 #92A0D7

Accessibility & contrast

On white

6.56

#4057AF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.20

#4057AF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4057AF

6.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4057AF	#FFFFFF	#000000	##FFFFFF
##4057AF	1.00	6.56	3.20	6.56
#FFFFFF	6.56	1.00	21.00	1.00
#000000	3.20	21.00	1.00	21.00
##FFFFFF	6.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2762B2

Deuteranopia (green-blind)

#0A59AD

Tritanopia (blue-blind)

#006B7B

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #4057af;
/* rgb */ color: rgb(64, 87, 175);
/* oklch */ color: oklch(48.6% 0.142 269.5);

Tailwind

colors: {
  custom: {
    50: '#8086c7',
    500: '#4057af',
    950: '#000000',
  },
}

SCSS

$custom: #4057af;
$custom-light: #8086c7;
$custom-dark: #000000;

JSON

{
  "hex": "#4057af",
  "rgb": {
    "r": 64,
    "g": 87,
    "b": 175
  },
  "hsl": {
    "h": 227.568,
    "s": 46.444,
    "l": 46.863
  },
  "oklch": {
    "l": 0.48644,
    "c": 0.14244,
    "h": 269.5
  },
  "luminance": 0.11002
}

Semantic roles & 50–950 ramp

primary

#4057AF

secondary

#C3B688

accent

#BB52D6

background

#F8F8FC

surface

#EFEFF8

border

#CACAD1

text

#0B0B13

muted

#7C7C82

Preview Lab

Preview with #4057AF

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

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