#2B308B#2B308B

#2B308B is a dark, vivid blue. Relative luminance 0.045; OKLCH L 36.7% C 0.148 H 274.0°. Best body text is #FFFFFF at 11.06:1 contrast (WCAG AA passes).

Color values

HEX	#2B308B
RGB	rgb(43, 48, 139)
HSL	hsl(237, 53%, 36%)
HSV	hsv(237, 69%, 55%)
CMYK	cmyk(69.1%, 65.5%, 0%, 45.5%)
CIE-LAB	lab(25.23, 28.94, -51.27)
CIE-LCH	lch(25.23, 58.87, 299.44°)
OKLab	oklab(36.72% 0.0104 -0.1479)
OKLCH	oklch(36.72% 0.148 274)
XYZ	xyz(6.7119, 4.4910, 24.9342)
Luminance	0.0449 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B308B #8B862B

analogous

#2B608B #2B308B #562B8B

triadic

#2B308B #8B2B30 #308B2B

tetradic

#2B308B #8B2B60 #8B862B #2B8B56

square

#2B308B #8B2B60 #8B862B #2B8B56

split-complementary

#2B308B #8B562B #608B2B

monochromatic

#0E102E #1D205C #2B308B #3940BA #6268CE

Accessibility & contrast

On white

11.06

#2B308B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.90

#2B308B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B308B

11.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B308B	#FFFFFF	#000000	##FFFFFF
##2B308B	1.00	11.06	1.90	11.06
#FFFFFF	11.06	1.00	21.00	1.00
#000000	1.90	21.00	1.00	21.00
##FFFFFF	11.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00408E

Deuteranopia (green-blind)

#003889

Tritanopia (blue-blind)

#004759

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #2b308b;
/* rgb */ color: rgb(43, 48, 139);
/* oklch */ color: oklch(36.7% 0.148 274.0);

Tailwind

colors: {
  custom: {
    50: '#7168ae',
    500: '#2b308b',
    950: '#000000',
  },
}

SCSS

$custom: #2b308b;
$custom-light: #7168ae;
$custom-dark: #000000;

JSON

{
  "hex": "#2b308b",
  "rgb": {
    "r": 43,
    "g": 48,
    "b": 139
  },
  "hsl": {
    "h": 236.875,
    "s": 52.747,
    "l": 35.686
  },
  "oklch": {
    "l": 0.3672,
    "c": 0.14829,
    "h": 274
  },
  "luminance": 0.04492
}

Semantic roles & 50–950 ramp

primary

#2B308B

secondary

#B5B05D

accent

#D54CDC

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#090610

muted

#7B7A7F

Preview Lab

Preview with #2B308B

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

Preview Lab → · Contrast checker → · Palette generator →