#4057BA#4057BA

#4057BA is a mid, vivid blue. Relative luminance 0.115; OKLCH L 49.4% C 0.158 H 269.9°. Best body text is #FFFFFF at 6.38:1 contrast (WCAG AA passes).

Color values

HEX	#4057BA
RGB	rgb(64, 87, 186)
HSL	hsl(229, 49%, 49%)
HSV	hsv(229, 66%, 73%)
CMYK	cmyk(65.6%, 53.2%, 0%, 27.1%)
CIE-LAB	lab(40.33, 23.65, -54.99)
CIE-LCH	lch(40.33, 59.86, 293.27°)
OKLab	oklab(49.45% -0.0003 -0.1579)
OKLCH	oklch(49.45% 0.158 269.9)
XYZ	xyz(14.3825, 11.4502, 47.8970)
Luminance	0.1145 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4057BA #BAA340

analogous

#4094BA #4057BA #6640BA

triadic

#4057BA #BA4057 #57BA40

tetradic

#4057BA #BA4094 #BAA340 #40BA66

square

#4057BA #BA4094 #BAA340 #40BA66

split-complementary

#4057BA #BA6640 #94BA40

monochromatic

#212C5F #30428C #4057BA #6B7DCC #99A5DC

Accessibility & contrast

On white

6.38

#4057BA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.29

#4057BA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4057BA

6.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4057BA	#FFFFFF	#000000	##FFFFFF
##4057BA	1.00	6.38	3.29	6.38
#FFFFFF	6.38	1.00	21.00	1.00
#000000	3.29	21.00	1.00	21.00
##FFFFFF	6.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1565BD

Deuteranopia (green-blind)

#005AB8

Tritanopia (blue-blind)

#006E80

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #4057ba;
/* rgb */ color: rgb(64, 87, 186);
/* oklch */ color: oklch(49.4% 0.158 269.9);

Tailwind

colors: {
  custom: {
    50: '#8286cf',
    500: '#4057ba',
    950: '#000000',
  },
}

SCSS

$custom: #4057ba;
$custom-light: #8286cf;
$custom-dark: #000000;

JSON

{
  "hex": "#4057ba",
  "rgb": {
    "r": 64,
    "g": 87,
    "b": 186
  },
  "hsl": {
    "h": 228.689,
    "s": 48.8,
    "l": 49.02
  },
  "oklch": {
    "l": 0.49447,
    "c": 0.15791,
    "h": 269.9
  },
  "luminance": 0.11452
}

Semantic roles & 50–950 ramp

primary

#4057BA

secondary

#C8BD8E

accent

#BF4FD8

background

#F8F8FC

surface

#F0EFF9

border

#CBCAD2

text

#0C0B14

muted

#7D7C82

Preview Lab

Preview with #4057BA

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

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