#2F308B#2F308B

#2F308B is a dark, vivid blue. Relative luminance 0.046; OKLCH L 37.0% C 0.147 H 276.0°. Best body text is #FFFFFF at 10.96:1 contrast (WCAG AA passes).

Color values

HEX	#2F308B
RGB	rgb(47, 48, 139)
HSL	hsl(239, 49%, 36%)
HSV	hsv(239, 66%, 55%)
CMYK	cmyk(66.2%, 65.5%, 0%, 45.5%)
CIE-LAB	lab(25.51, 29.54, -50.81)
CIE-LCH	lch(25.51, 58.77, 300.18°)
OKLab	oklab(36.99% 0.0153 -0.1465)
OKLCH	oklch(36.99% 0.147 276)
XYZ	xyz(6.8879, 4.5817, 24.9425)
Luminance	0.0458 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F308B #8B8A2F

analogous

#2F5E8B #2F308B #5C2F8B

triadic

#2F308B #8B2F30 #308B2F

tetradic

#2F308B #8B2F5E #8B8A2F #2F8B5C

square

#2F308B #8B2F5E #8B8A2F #2F8B5C

split-complementary

#2F308B #8B5C2F #5E8B2F

monochromatic

#101030 #20205D #2F308B #3E40B9 #6869CC

Accessibility & contrast

On white

10.96

#2F308B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.92

#2F308B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F308B

10.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F308B	#FFFFFF	#000000	##FFFFFF
##2F308B	1.00	10.96	1.92	10.96
#FFFFFF	10.96	1.00	21.00	1.00
#000000	1.92	21.00	1.00	21.00
##FFFFFF	10.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00418E

Deuteranopia (green-blind)

#003889

Tritanopia (blue-blind)

#004759

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #2f308b;
/* rgb */ color: rgb(47, 48, 139);
/* oklch */ color: oklch(37.0% 0.147 276.0);

Tailwind

colors: {
  custom: {
    50: '#7368ae',
    500: '#2f308b',
    950: '#000000',
  },
}

SCSS

$custom: #2f308b;
$custom-light: #7368ae;
$custom-dark: #000000;

JSON

{
  "hex": "#2f308b",
  "rgb": {
    "r": 47,
    "g": 48,
    "b": 139
  },
  "hsl": {
    "h": 239.348,
    "s": 49.462,
    "l": 36.471
  },
  "oklch": {
    "l": 0.36994,
    "c": 0.14727,
    "h": 276
  },
  "luminance": 0.04582
}

Semantic roles & 50–950 ramp

primary

#2F308B

secondary

#B3B263

accent

#D74FD9

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#090610

muted

#7B7A7F

Preview Lab

Preview with #2F308B

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

Preview Lab → · Contrast checker → · Palette generator →