#2830B3#2830B3

#2830B3 is a dark, highly saturated blue. Relative luminance 0.058; OKLCH L 40.5% C 0.201 H 270.7°. Best body text is #FFFFFF at 9.70:1 contrast (WCAG AA passes).

Color values

HEX	#2830B3
RGB	rgb(40, 48, 179)
HSL	hsl(237, 63%, 43%)
HSV	hsv(237, 78%, 70%)
CMYK	cmyk(77.7%, 73.2%, 0%, 29.8%)
CIE-LAB	lab(28.95, 42.81, -69.50)
CIE-LCH	lch(28.95, 81.62, 301.63°)
OKLab	oklab(40.54% 0.0024 -0.2012)
OKLCH	oklch(40.54% 0.201 270.7)
XYZ	xyz(10.0659, 5.8186, 43.2317)
Luminance	0.0582 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.33

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2830B3 #B3AB28

analogous

#2875B3 #2830B3 #6628B3

triadic

#2830B3 #B32830 #30B328

tetradic

#2830B3 #B32875 #B3AB28 #28B366

square

#2830B3 #B32875 #B3AB28 #28B366

split-complementary

#2830B3 #B36628 #75B328

monochromatic

#12154F #1D2381 #2830B3 #434CD5 #757BE0

Accessibility & contrast

On white

9.70

#2830B3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.16

#2830B3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2830B3

9.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2830B3	#FFFFFF	#000000	##FFFFFF
##2830B3	1.00	9.70	2.16	9.70
#FFFFFF	9.70	1.00	21.00	1.00
#000000	2.16	21.00	1.00	21.00
##FFFFFF	9.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BB7

Deuteranopia (green-blind)

#003DB1

Tritanopia (blue-blind)

#00566F

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #2830b3;
/* rgb */ color: rgb(40, 48, 179);
/* oklch */ color: oklch(40.5% 0.201 270.7);

Tailwind

colors: {
  custom: {
    50: '#7a69cb',
    500: '#2830b3',
    950: '#000000',
  },
}

SCSS

$custom: #2830b3;
$custom-light: #7a69cb;
$custom-dark: #000000;

JSON

{
  "hex": "#2830b3",
  "rgb": {
    "r": 40,
    "g": 48,
    "b": 179
  },
  "hsl": {
    "h": 236.547,
    "s": 63.47,
    "l": 42.941
  },
  "oklch": {
    "l": 0.40539,
    "c": 0.20125,
    "h": 270.7
  },
  "luminance": 0.0582
}

Semantic roles & 50–950 ramp

primary

#2830B3

secondary

#C8C36F

accent

#DD41E6

background

#F8F6FC

surface

#EFEBF9

border

#CAC6D2

text

#0B0613

muted

#7C7A82

Preview Lab

Preview with #2830B3

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

Preview Lab → · Contrast checker → · Palette generator →