#2830B1#2830B1

#2830B1 is a dark, vivid blue. Relative luminance 0.057; OKLCH L 40.3% C 0.199 H 270.8°. Best body text is #FFFFFF at 9.78:1 contrast (WCAG AA passes).

Color values

HEX	#2830B1
RGB	rgb(40, 48, 177)
HSL	hsl(236, 63%, 43%)
HSV	hsv(236, 77%, 69%)
CMYK	cmyk(77.4%, 72.9%, 0%, 30.6%)
CIE-LAB	lab(28.74, 42.12, -68.65)
CIE-LCH	lch(28.74, 80.54, 301.53°)
OKLab	oklab(40.33% 0.0027 -0.1988)
OKLCH	oklch(40.33% 0.199 270.8)
XYZ	xyz(9.8651, 5.7383, 42.1741)
Luminance	0.0574 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.50

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2830B1 #B1A928

analogous

#2875B1 #2830B1 #6428B1

triadic

#2830B1 #B12830 #30B128

tetradic

#2830B1 #B12875 #B1A928 #28B164

square

#2830B1 #B12875 #B1A928 #28B164

split-complementary

#2830B1 #B16428 #75B128

monochromatic

#11154D #1D227F #2830B1 #424AD4 #747AE0

Accessibility & contrast

On white

9.78

#2830B1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.15

#2830B1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2830B1

9.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2830B1	#FFFFFF	#000000	##FFFFFF
##2830B1	1.00	9.78	2.15	9.78
#FFFFFF	9.78	1.00	21.00	1.00
#000000	2.15	21.00	1.00	21.00
##FFFFFF	9.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004AB5

Deuteranopia (green-blind)

#003DAF

Tritanopia (blue-blind)

#00556D

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #2830b1;
/* rgb */ color: rgb(40, 48, 177);
/* oklch */ color: oklch(40.3% 0.199 270.8);

Tailwind

colors: {
  custom: {
    50: '#7a69ca',
    500: '#2830b1',
    950: '#000000',
  },
}

SCSS

$custom: #2830b1;
$custom-light: #7a69ca;
$custom-dark: #000000;

JSON

{
  "hex": "#2830b1",
  "rgb": {
    "r": 40,
    "g": 48,
    "b": 177
  },
  "hsl": {
    "h": 236.496,
    "s": 63.134,
    "l": 42.549
  },
  "oklch": {
    "l": 0.40328,
    "c": 0.19879,
    "h": 270.8
  },
  "luminance": 0.05739
}

Semantic roles & 50–950 ramp

primary

#2830B1

secondary

#C7C26E

accent

#DD42E6

background

#F8F6FC

surface

#EFEBF9

border

#CAC6D2

text

#0B0613

muted

#7C7A82

Preview Lab

Preview with #2830B1

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

Preview Lab → · Contrast checker → · Palette generator →