#2A3F9B#2A3F9B

#2A3F9B is a dark, vivid blue. Relative luminance 0.064; OKLCH L 41.0% C 0.152 H 268.9°. Best body text is #FFFFFF at 9.20:1 contrast (WCAG AA passes).

Color values

HEX	#2A3F9B
RGB	rgb(42, 63, 155)
HSL	hsl(229, 57%, 39%)
HSV	hsv(229, 73%, 61%)
CMYK	cmyk(72.9%, 59.4%, 0%, 39.2%)
CIE-LAB	lab(30.43, 24.74, -52.62)
CIE-LCH	lch(30.43, 58.15, 295.18°)
OKLab	oklab(40.97% -0.003 -0.1518)
OKLCH	oklch(40.97% 0.152 268.9)
XYZ	xyz(8.6467, 6.4129, 31.7861)
Luminance	0.0641 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2A3F9B #9B862A

analogous

#2A779B #2A3F9B #4E2A9B

triadic

#2A3F9B #9B2A3F #3F9B2A

tetradic

#2A3F9B #9B2A77 #9B862A #2A9B4E

square

#2A3F9B #9B2A77 #9B862A #2A9B4E

split-complementary

#2A3F9B #9B4E2A #779B2A

monochromatic

#10183B #1D2B6B #2A3F9B #3954C9 #697DD6

Accessibility & contrast

On white

9.20

#2A3F9B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.28

#2A3F9B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2A3F9B

9.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2A3F9B	#FFFFFF	#000000	##FFFFFF
##2A3F9B	1.00	9.20	2.28	9.20
#FFFFFF	9.20	1.00	21.00	1.00
#000000	2.28	21.00	1.00	21.00
##FFFFFF	9.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004D9E

Deuteranopia (green-blind)

#004399

Tritanopia (blue-blind)

#005666

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #2a3f9b;
/* rgb */ color: rgb(42, 63, 155);
/* oklch */ color: oklch(41.0% 0.152 268.9);

Tailwind

colors: {
  custom: {
    50: '#7473b9',
    500: '#2a3f9b',
    950: '#000000',
  },
}

SCSS

$custom: #2a3f9b;
$custom-light: #7473b9;
$custom-dark: #000000;

JSON

{
  "hex": "#2a3f9b",
  "rgb": {
    "r": 42,
    "g": 63,
    "b": 155
  },
  "hsl": {
    "h": 228.85,
    "s": 57.36,
    "l": 38.627
  },
  "oklch": {
    "l": 0.40972,
    "c": 0.1518,
    "h": 268.9
  },
  "luminance": 0.06414
}

Semantic roles & 50–950 ramp

primary

#2A3F9B

secondary

#BDAC64

accent

#C447E1

background

#F7F7FB

surface

#EEEDF6

border

#C9C8D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #2A3F9B

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

Preview Lab → · Contrast checker → · Palette generator →