#2A3F91#2A3F91

#2A3F91 is a dark, vivid blue. Relative luminance 0.061; OKLCH L 40.1% C 0.138 H 268.6°. Best body text is #FFFFFF at 9.47:1 contrast (WCAG AA passes).

Color values

HEX	#2A3F91
RGB	rgb(42, 63, 145)
HSL	hsl(228, 55%, 37%)
HSV	hsv(228, 71%, 57%)
CMYK	cmyk(71%, 56.6%, 0%, 43.1%)
CIE-LAB	lab(29.64, 20.94, -47.80)
CIE-LCH	lch(29.64, 52.19, 293.66°)
OKLab	oklab(40.13% -0.0034 -0.1376)
OKLCH	oklch(40.13% 0.138 268.6)
XYZ	xyz(7.8414, 6.0908, 27.5450)
Luminance	0.0609 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2A3F91 #917C2A

analogous

#2A7391 #2A3F91 #492A91

triadic

#2A3F91 #912A3F #3F912A

tetradic

#2A3F91 #912A73 #917C2A #2A9149

square

#2A3F91 #912A73 #917C2A #2A9149

split-complementary

#2A3F91 #91492A #73912A

monochromatic

#0F1632 #1C2A62 #2A3F91 #3854C0 #637AD2

Accessibility & contrast

On white

9.47

#2A3F91 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.22

#2A3F91 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2A3F91

9.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2A3F91	#FFFFFF	#000000	##FFFFFF
##2A3F91	1.00	9.47	2.22	9.47
#FFFFFF	9.47	1.00	21.00	1.00
#000000	2.22	21.00	1.00	21.00
##FFFFFF	9.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004B94

Deuteranopia (green-blind)

#00418F

Tritanopia (blue-blind)

#005361

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #2a3f91;
/* rgb */ color: rgb(42, 63, 145);
/* oklch */ color: oklch(40.1% 0.138 268.6);

Tailwind

colors: {
  custom: {
    50: '#7173b2',
    500: '#2a3f91',
    950: '#000000',
  },
}

SCSS

$custom: #2a3f91;
$custom-light: #7173b2;
$custom-dark: #000000;

JSON

{
  "hex": "#2a3f91",
  "rgb": {
    "r": 42,
    "g": 63,
    "b": 145
  },
  "hsl": {
    "h": 227.767,
    "s": 55.08,
    "l": 36.667
  },
  "oklch": {
    "l": 0.40131,
    "c": 0.13764,
    "h": 268.6
  },
  "luminance": 0.06092
}

Semantic roles & 50–950 ramp

primary

#2A3F91

secondary

#B8A65F

accent

#C049DE

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090811

muted

#7B7B80

Preview Lab

Preview with #2A3F91

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

Preview Lab → · Contrast checker → · Palette generator →