#4030B3#4030B3

#4030B3 is a dark, vivid blue. Relative luminance 0.065; OKLCH L 42.1% C 0.195 H 279.4°. Best body text is #FFFFFF at 9.16:1 contrast (WCAG AA passes).

Color values

HEX	#4030B3
RGB	rgb(64, 48, 179)
HSL	hsl(247, 58%, 45%)
HSV	hsv(247, 73%, 70%)
CMYK	cmyk(64.2%, 73.2%, 0%, 29.8%)
CIE-LAB	lab(30.54, 45.30, -66.82)
CIE-LCH	lch(30.54, 80.73, 304.13°)
OKLab	oklab(42.09% 0.0319 -0.1929)
OKLCH	oklch(42.09% 0.195 279.4)
XYZ	xyz(11.3054, 6.4577, 43.2898)
Luminance	0.0646 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Indigo Blue

#3A18B1

ΔE00 4.58

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4030B3 #A3B330

analogous

#3062B3 #4030B3 #8130B3

triadic

#4030B3 #B34030 #30B340

tetradic

#4030B3 #B33062 #A3B330 #30B381

square

#4030B3 #B33062 #A3B330 #30B381

split-complementary

#4030B3 #B38130 #62B330

monochromatic

#1D1652 #2F2383 #4030B3 #6050D0 #8C80DD

Accessibility & contrast

On white

9.16

#4030B3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.29

#4030B3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4030B3

9.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4030B3	#FFFFFF	#000000	##FFFFFF
##4030B3	1.00	9.16	2.29	9.16
#FFFFFF	9.16	1.00	21.00	1.00
#000000	2.29	21.00	1.00	21.00
##FFFFFF	9.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DB7

Deuteranopia (green-blind)

#0043B1

Tritanopia (blue-blind)

#00556F

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #4030b3;
/* rgb */ color: rgb(64, 48, 179);
/* oklch */ color: oklch(42.1% 0.195 279.4);

Tailwind

colors: {
  custom: {
    50: '#836bcb',
    500: '#4030b3',
    950: '#000000',
  },
}

SCSS

$custom: #4030b3;
$custom-light: #836bcb;
$custom-dark: #000000;

JSON

{
  "hex": "#4030b3",
  "rgb": {
    "r": 64,
    "g": 48,
    "b": 179
  },
  "hsl": {
    "h": 247.328,
    "s": 57.709,
    "l": 44.51
  },
  "oklch": {
    "l": 0.42085,
    "c": 0.19548,
    "h": 279.4
  },
  "luminance": 0.06459
}

Semantic roles & 50–950 ramp

primary

#4030B3

secondary

#BDC679

accent

#E147CE

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0C0713

muted

#7D7A82

Preview Lab

Preview with #4030B3

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

Preview Lab → · Contrast checker → · Palette generator →