#4057BD#4057BD

#4057BD is a mid, vivid blue. Relative luminance 0.116; OKLCH L 49.7% C 0.162 H 270.0°. Best body text is #FFFFFF at 6.33:1 contrast (WCAG AA passes).

Color values

HEX	#4057BD
RGB	rgb(64, 87, 189)
HSL	hsl(229, 49%, 50%)
HSV	hsv(229, 66%, 74%)
CMYK	cmyk(66.1%, 54%, 0%, 25.9%)
CIE-LAB	lab(40.54, 24.71, -56.40)
CIE-LCH	lch(40.54, 61.58, 293.66°)
OKLab	oklab(49.67% -0.0001 -0.1621)
OKLCH	oklch(49.67% 0.162 270)
XYZ	xyz(14.7047, 11.5791, 49.5943)
Luminance	0.1158 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4057BD #BDA640

analogous

#4096BD #4057BD #6840BD

triadic

#4057BD #BD4057 #57BD40

tetradic

#4057BD #BD4096 #BDA640 #40BD68

square

#4057BD #BD4096 #BDA640 #40BD68

split-complementary

#4057BD #BD6840 #96BD40

monochromatic

#212D62 #31428F #4057BD #6D7FCD #9AA7DD

Accessibility & contrast

On white

6.33

#4057BD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.32

#4057BD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4057BD

6.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4057BD	#FFFFFF	#000000	##FFFFFF
##4057BD	1.00	6.33	3.32	6.33
#FFFFFF	6.33	1.00	21.00	1.00
#000000	3.32	21.00	1.00	21.00
##FFFFFF	6.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0D65C1

Deuteranopia (green-blind)

#005ABB

Tritanopia (blue-blind)

#006F81

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #4057bd;
/* rgb */ color: rgb(64, 87, 189);
/* oklch */ color: oklch(49.7% 0.162 270.0);

Tailwind

colors: {
  custom: {
    50: '#8386d2',
    500: '#4057bd',
    950: '#000000',
  },
}

SCSS

$custom: #4057bd;
$custom-light: #8386d2;
$custom-dark: #000000;

JSON

{
  "hex": "#4057bd",
  "rgb": {
    "r": 64,
    "g": 87,
    "b": 189
  },
  "hsl": {
    "h": 228.96,
    "s": 49.407,
    "l": 49.608
  },
  "oklch": {
    "l": 0.49673,
    "c": 0.16207,
    "h": 270
  },
  "luminance": 0.11581
}

Semantic roles & 50–950 ramp

primary

#4057BD

secondary

#C9BE90

accent

#C04FD9

background

#F8F8FD

surface

#F0EFFA

border

#CBCAD3

text

#0C0B14

muted

#7D7C83

Preview Lab

Preview with #4057BD

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

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