#2B308C#2B308C

#2B308C is a dark, vivid blue. Relative luminance 0.045; OKLCH L 36.8% C 0.150 H 273.9°. Best body text is #FFFFFF at 11.03:1 contrast (WCAG AA passes).

Color values

HEX	#2B308C
RGB	rgb(43, 48, 140)
HSL	hsl(237, 53%, 36%)
HSV	hsv(237, 69%, 55%)
CMYK	cmyk(69.3%, 65.7%, 0%, 45.1%)
CIE-LAB	lab(25.32, 29.31, -51.75)
CIE-LCH	lch(25.32, 59.47, 299.53°)
OKLab	oklab(36.81% 0.0103 -0.1493)
OKLCH	oklch(36.81% 0.15 273.9)
XYZ	xyz(6.7853, 4.5203, 25.3208)
Luminance	0.0452 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B308C #8C872B

analogous

#2B608C #2B308C #562B8C

triadic

#2B308C #8C2B30 #308C2B

tetradic

#2B308C #8C2B60 #8C872B #2B8C56

square

#2B308C #8C2B60 #8C872B #2B8C56

split-complementary

#2B308C #8C562B #608C2B

monochromatic

#0E102E #1D205D #2B308C #3940BB #6268CF

Accessibility & contrast

On white

11.03

#2B308C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.90

#2B308C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B308C

11.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B308C	#FFFFFF	#000000	##FFFFFF
##2B308C	1.00	11.03	1.90	11.03
#FFFFFF	11.03	1.00	21.00	1.00
#000000	1.90	21.00	1.00	21.00
##FFFFFF	11.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00408F

Deuteranopia (green-blind)

#00388A

Tritanopia (blue-blind)

#004859

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #2b308c;
/* rgb */ color: rgb(43, 48, 140);
/* oklch */ color: oklch(36.8% 0.150 273.9);

Tailwind

colors: {
  custom: {
    50: '#7268ae',
    500: '#2b308c',
    950: '#000000',
  },
}

SCSS

$custom: #2b308c;
$custom-light: #7268ae;
$custom-dark: #000000;

JSON

{
  "hex": "#2b308c",
  "rgb": {
    "r": 43,
    "g": 48,
    "b": 140
  },
  "hsl": {
    "h": 236.907,
    "s": 53.005,
    "l": 35.882
  },
  "oklch": {
    "l": 0.36813,
    "c": 0.14968,
    "h": 273.9
  },
  "luminance": 0.04521
}

Semantic roles & 50–950 ramp

primary

#2B308C

secondary

#B5B15E

accent

#D54BDC

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#090610

muted

#7B7A7F

Preview Lab

Preview with #2B308C

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

Preview Lab → · Contrast checker → · Palette generator →