#4057BF#4057BF

#4057BF is a mid, vivid blue. Relative luminance 0.117; OKLCH L 49.8% C 0.165 H 270.0°. Best body text is #FFFFFF at 6.30:1 contrast (WCAG AA passes).

Color values

HEX	#4057BF
RGB	rgb(64, 87, 191)
HSL	hsl(229, 50%, 50%)
HSV	hsv(229, 66%, 75%)
CMYK	cmyk(66.5%, 54.5%, 0%, 25.1%)
CIE-LAB	lab(40.68, 25.42, -57.34)
CIE-LCH	lch(40.68, 62.72, 293.91°)
OKLab	oklab(49.83% 0 -0.1648)
OKLCH	oklch(49.83% 0.165 270)
XYZ	xyz(14.9233, 11.6666, 50.7455)
Luminance	0.1167 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4057BF #BFA840

analogous

#4096BF #4057BF #6940BF

triadic

#4057BF #BF4057 #57BF40

tetradic

#4057BF #BF4096 #BFA840 #40BF69

square

#4057BF #BF4096 #BFA840 #40BF69

split-complementary

#4057BF #BF6940 #96BF40

monochromatic

#212D63 #314291 #4057BF #6E7FCE #9CA8DE

Accessibility & contrast

On white

6.30

#4057BF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.33

#4057BF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4057BF

6.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4057BF	#FFFFFF	#000000	##FFFFFF
##4057BF	1.00	6.30	3.33	6.30
#FFFFFF	6.30	1.00	21.00	1.00
#000000	3.33	21.00	1.00	21.00
##FFFFFF	6.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0566C3

Deuteranopia (green-blind)

#005ABD

Tritanopia (blue-blind)

#007082

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #4057bf;
/* rgb */ color: rgb(64, 87, 191);
/* oklch */ color: oklch(49.8% 0.165 270.0);

Tailwind

colors: {
  custom: {
    50: '#8386d3',
    500: '#4057bf',
    950: '#000000',
  },
}

SCSS

$custom: #4057bf;
$custom-light: #8386d3;
$custom-dark: #000000;

JSON

{
  "hex": "#4057bf",
  "rgb": {
    "r": 64,
    "g": 87,
    "b": 191
  },
  "hsl": {
    "h": 229.134,
    "s": 49.804,
    "l": 50
  },
  "oklch": {
    "l": 0.49825,
    "c": 0.16482,
    "h": 270
  },
  "luminance": 0.11668
}

Semantic roles & 50–950 ramp

primary

#4057BF

secondary

#CAC091

accent

#C04ED9

background

#F8F8FD

surface

#F0EFFA

border

#CBCAD3

text

#0C0B14

muted

#7D7C83

Preview Lab

Preview with #4057BF

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

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