#2A31B1#2A31B1

#2A31B1 is a dark, vivid blue. Relative luminance 0.059; OKLCH L 40.6% C 0.197 H 271.3°. Best body text is #FFFFFF at 9.67:1 contrast (WCAG AA passes).

Color values

HEX	#2A31B1
RGB	rgb(42, 49, 177)
HSL	hsl(237, 62%, 43%)
HSV	hsv(237, 76%, 69%)
CMYK	cmyk(76.3%, 72.3%, 0%, 30.6%)
CIE-LAB	lab(29.06, 41.70, -68.12)
CIE-LCH	lch(29.06, 79.87, 301.48°)
OKLab	oklab(40.59% 0.0043 -0.1972)
OKLCH	oklch(40.59% 0.197 271.3)
XYZ	xyz(9.9863, 5.8621, 42.1916)
Luminance	0.0586 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2A31B1 #B1AA2A

analogous

#2A74B1 #2A31B1 #662AB1

triadic

#2A31B1 #B12A31 #31B12A

tetradic

#2A31B1 #B12A74 #B1AA2A #2AB166

square

#2A31B1 #B12A74 #B1AA2A #2AB166

split-complementary

#2A31B1 #B1662A #74B12A

monochromatic

#13164E #1E2380 #2A31B1 #454DD3 #777CDF

Accessibility & contrast

On white

9.67

#2A31B1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.17

#2A31B1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2A31B1

9.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2A31B1	#FFFFFF	#000000	##FFFFFF
##2A31B1	1.00	9.67	2.17	9.67
#FFFFFF	9.67	1.00	21.00	1.00
#000000	2.17	21.00	1.00	21.00
##FFFFFF	9.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BB5

Deuteranopia (green-blind)

#003EAF

Tritanopia (blue-blind)

#00556E

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #2a31b1;
/* rgb */ color: rgb(42, 49, 177);
/* oklch */ color: oklch(40.6% 0.197 271.3);

Tailwind

colors: {
  custom: {
    50: '#7a6aca',
    500: '#2a31b1',
    950: '#000000',
  },
}

SCSS

$custom: #2a31b1;
$custom-light: #7a6aca;
$custom-dark: #000000;

JSON

{
  "hex": "#2a31b1",
  "rgb": {
    "r": 42,
    "g": 49,
    "b": 177
  },
  "hsl": {
    "h": 236.889,
    "s": 61.644,
    "l": 42.941
  },
  "oklch": {
    "l": 0.40586,
    "c": 0.19724,
    "h": 271.3
  },
  "luminance": 0.05863
}

Semantic roles & 50–950 ramp

primary

#2A31B1

secondary

#C6C270

accent

#DC43E5

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0613

muted

#7C7A82

Preview Lab

Preview with #2A31B1

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

Preview Lab → · Contrast checker → · Palette generator →