#2A4581#2A4581

#2A4581 is a dark, moderate blue. Relative luminance 0.063; OKLCH L 40.2% C 0.106 H 264.0°. Best body text is #FFFFFF at 9.26:1 contrast (WCAG AA passes).

Color values

HEX	#2A4581
RGB	rgb(42, 69, 129)
HSL	hsl(221, 51%, 34%)
HSV	hsv(221, 67%, 51%)
CMYK	cmyk(67.4%, 46.5%, 0%, 49.4%)
CIE-LAB	lab(30.24, 10.72, -36.95)
CIE-LCH	lch(30.24, 38.48, 286.18°)
OKLab	oklab(40.22% -0.0111 -0.1056)
OKLCH	oklch(40.22% 0.106 264)
XYZ	xyz(7.0440, 6.3328, 21.6158)
Luminance	0.0633 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2A4581 #81662A

analogous

#2A7081 #2A4581 #3A2A81

triadic

#2A4581 #812A45 #45812A

tetradic

#2A4581 #812A70 #81662A #2A813A

square

#2A4581 #812A70 #81662A #2A813A

split-complementary

#2A4581 #813A2A #70812A

monochromatic

#0C1425 #1B2C53 #2A4581 #395EAF #5C7ECA

Accessibility & contrast

On white

9.26

#2A4581 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.27

#2A4581 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2A4581

9.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2A4581	#FFFFFF	#000000	##FFFFFF
##2A4581	1.00	9.26	2.27	9.26
#FFFFFF	9.26	1.00	21.00	1.00
#000000	2.27	21.00	1.00	21.00
##FFFFFF	9.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#284B83

Deuteranopia (green-blind)

#194380

Tritanopia (blue-blind)

#00535C

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #2a4581;
/* rgb */ color: rgb(42, 69, 129);
/* oklch */ color: oklch(40.2% 0.106 264.0);

Tailwind

colors: {
  custom: {
    50: '#6d78a6',
    500: '#2a4581',
    950: '#000000',
  },
}

SCSS

$custom: #2a4581;
$custom-light: #6d78a6;
$custom-dark: #000000;

JSON

{
  "hex": "#2a4581",
  "rgb": {
    "r": 42,
    "g": 69,
    "b": 129
  },
  "hsl": {
    "h": 221.379,
    "s": 50.877,
    "l": 33.529
  },
  "oklch": {
    "l": 0.40223,
    "c": 0.10617,
    "h": 264
  },
  "luminance": 0.06333
}

Semantic roles & 50–950 ramp

primary

#2A4581

secondary

#AF9457

accent

#AF4DDA

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#08080F

muted

#7B7B7F

Preview Lab

Preview with #2A4581

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

Preview Lab → · Contrast checker → · Palette generator →