#4057CA#4057CA

#4057CA is a mid, vivid blue. Relative luminance 0.122; OKLCH L 50.7% C 0.180 H 270.2°. Best body text is #FFFFFF at 6.11:1 contrast (WCAG AA passes).

Color values

HEX	#4057CA
RGB	rgb(64, 87, 202)
HSL	hsl(230, 57%, 52%)
HSV	hsv(230, 68%, 79%)
CMYK	cmyk(68.3%, 56.9%, 0%, 20.8%)
CIE-LAB	lab(41.48, 29.33, -62.42)
CIE-LCH	lch(41.48, 68.97, 295.17°)
OKLab	oklab(50.68% 0.0005 -0.1798)
OKLCH	oklch(50.68% 0.18 270.2)
XYZ	xyz(16.1796, 12.1691, 57.3619)
Luminance	0.1217 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4057CA #CAB340

analogous

#409CCA #4057CA #6E40CA

triadic

#4057CA #CA4057 #57CA40

tetradic

#4057CA #CA409C #CAB340 #40CA6E

square

#4057CA #CA409C #CAB340 #40CA6E

split-complementary

#4057CA #CA6E40 #9CCA40

monochromatic

#1F2D70 #2C40A0 #4057CA #7081D7 #A0ABE5

Accessibility & contrast

On white

6.11

#4057CA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.43

#4057CA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4057CA

6.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4057CA	#FFFFFF	#000000	##FFFFFF
##4057CA	1.00	6.11	3.43	6.11
#FFFFFF	6.11	1.00	21.00	1.00
#000000	3.43	21.00	1.00	21.00
##FFFFFF	6.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0068CE

Deuteranopia (green-blind)

#005CC8

Tritanopia (blue-blind)

#007388

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #4057ca;
/* rgb */ color: rgb(64, 87, 202);
/* oklch */ color: oklch(50.7% 0.180 270.2);

Tailwind

colors: {
  custom: {
    50: '#8586db',
    500: '#4057ca',
    950: '#000000',
  },
}

SCSS

$custom: #4057ca;
$custom-light: #8586db;
$custom-dark: #000000;

JSON

{
  "hex": "#4057ca",
  "rgb": {
    "r": 64,
    "g": 87,
    "b": 202
  },
  "hsl": {
    "h": 230,
    "s": 56.557,
    "l": 52.157
  },
  "oklch": {
    "l": 0.5068,
    "c": 0.17977,
    "h": 270.2
  },
  "luminance": 0.12171
}

Semantic roles & 50–950 ramp

primary

#4057CA

secondary

#D1C795

accent

#C748E0

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #4057CA

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

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