#2A37A1#2A37A1

#2A37A1 is a dark, vivid blue. Relative luminance 0.058; OKLCH L 40.0% C 0.170 H 270.9°. Best body text is #FFFFFF at 9.72:1 contrast (WCAG AA passes).

Color values

HEX	#2A37A1
RGB	rgb(42, 55, 161)
HSL	hsl(233, 59%, 40%)
HSV	hsv(233, 74%, 63%)
CMYK	cmyk(73.9%, 65.8%, 0%, 36.9%)
CIE-LAB	lab(28.89, 32.27, -58.77)
CIE-LCH	lch(28.89, 67.05, 298.77°)
OKLab	oklab(40% 0.0027 -0.1699)
OKLCH	oklch(40% 0.17 270.9)
XYZ	xyz(8.7519, 5.7969, 34.3690)
Luminance	0.0580 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2A37A1 #A1942A

analogous

#2A73A1 #2A37A1 #582AA1

triadic

#2A37A1 #A12A37 #37A12A

tetradic

#2A37A1 #A12A73 #A1942A #2AA158

square

#2A37A1 #A12A73 #A1942A #2AA158

split-complementary

#2A37A1 #A1582A #73A12A

monochromatic

#111640 #1D2670 #2A37A1 #3C4CCC #6D78D9

Accessibility & contrast

On white

9.72

#2A37A1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.16

#2A37A1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2A37A1

9.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2A37A1	#FFFFFF	#000000	##FFFFFF
##2A37A1	1.00	9.72	2.16	9.72
#FFFFFF	9.72	1.00	21.00	1.00
#000000	2.16	21.00	1.00	21.00
##FFFFFF	9.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004AA4

Deuteranopia (green-blind)

#003F9F

Tritanopia (blue-blind)

#005367

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #2a37a1;
/* rgb */ color: rgb(42, 55, 161);
/* oklch */ color: oklch(40.0% 0.170 270.9);

Tailwind

colors: {
  custom: {
    50: '#766ebe',
    500: '#2a37a1',
    950: '#000000',
  },
}

SCSS

$custom: #2a37a1;
$custom-light: #766ebe;
$custom-dark: #000000;

JSON

{
  "hex": "#2a37a1",
  "rgb": {
    "r": 42,
    "g": 55,
    "b": 161
  },
  "hsl": {
    "h": 233.445,
    "s": 58.621,
    "l": 39.804
  },
  "oklch": {
    "l": 0.39996,
    "c": 0.16991,
    "h": 270.9
  },
  "luminance": 0.05798
}

Semantic roles & 50–950 ramp

primary

#2A37A1

secondary

#C0B667

accent

#D146E2

background

#F7F6FB

surface

#EEEBF7

border

#C9C6D0

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #2A37A1

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

Preview Lab → · Contrast checker → · Palette generator →