#2F288B#2F288B

#2F288B is a dark, vivid blue. Relative luminance 0.040; OKLCH L 35.6% C 0.157 H 278.0°. Best body text is #FFFFFF at 11.68:1 contrast (WCAG AA passes).

Color values

HEX	#2F288B
RGB	rgb(47, 40, 139)
HSL	hsl(244, 55%, 35%)
HSV	hsv(244, 71%, 55%)
CMYK	cmyk(66.2%, 71.2%, 0%, 45.5%)
CIE-LAB	lab(23.62, 34.62, -53.90)
CIE-LCH	lch(23.62, 64.05, 302.71°)
OKLab	oklab(35.63% 0.0218 -0.1555)
OKLCH	oklch(35.63% 0.157 278)
XYZ	xyz(6.5898, 3.9855, 24.8431)
Luminance	0.0399 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F288B #848B28

analogous

#28538B #2F288B #60288B

triadic

#2F288B #8B2F28 #288B2F

tetradic

#2F288B #8B2853 #848B28 #288B60

square

#2F288B #8B2853 #848B28 #288B60

split-complementary

#2F288B #8B6028 #538B28

monochromatic

#0F0D2C #1F1A5B #2F288B #3F36BB #655DD0

Accessibility & contrast

On white

11.68

#2F288B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.80

#2F288B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F288B

11.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F288B	#FFFFFF	#000000	##FFFFFF
##2F288B	1.00	11.68	1.80	11.68
#FFFFFF	11.68	1.00	21.00	1.00
#000000	1.80	21.00	1.00	21.00
##FFFFFF	11.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C8E

Deuteranopia (green-blind)

#003489

Tritanopia (blue-blind)

#004356

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #2f288b;
/* rgb */ color: rgb(47, 40, 139);
/* oklch */ color: oklch(35.6% 0.157 278.0);

Tailwind

colors: {
  custom: {
    50: '#7463ae',
    500: '#2f288b',
    950: '#000000',
  },
}

SCSS

$custom: #2f288b;
$custom-light: #7463ae;
$custom-dark: #000000;

JSON

{
  "hex": "#2f288b",
  "rgb": {
    "r": 47,
    "g": 40,
    "b": 139
  },
  "hsl": {
    "h": 244.242,
    "s": 55.307,
    "l": 35.098
  },
  "oklch": {
    "l": 0.35628,
    "c": 0.15705,
    "h": 278
  },
  "luminance": 0.03986
}

Semantic roles & 50–950 ramp

primary

#2F288B

secondary

#AFB659

accent

#DF49D4

background

#F7F5FA

surface

#EDEAF4

border

#C8C6CE

text

#090510

muted

#7B797F

Preview Lab

Preview with #2F288B

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

Preview Lab → · Contrast checker → · Palette generator →