#2A178E#2A178E

#2A178E is a dark, vivid blue. Relative luminance 0.031; OKLCH L 33.3% C 0.179 H 277.7°. Best body text is #FFFFFF at 13.03:1 contrast (WCAG AA passes).

Color values

HEX	#2A178E
RGB	rgb(42, 23, 142)
HSL	hsl(250, 72%, 32%)
HSV	hsv(250, 84%, 56%)
CMYK	cmyk(70.4%, 83.8%, 0%, 44.3%)
CIE-LAB	lab(20.27, 44.30, -61.31)
CIE-LCH	lch(20.27, 75.63, 305.85°)
OKLab	oklab(33.26% 0.0239 -0.1771)
OKLCH	oklch(33.26% 0.179 277.7)
XYZ	xyz(6.1421, 3.0575, 25.8524)
Luminance	0.0306 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2A178E #7B8E17

analogous

#173F8E #2A178E #66178E

triadic

#2A178E #8E2A17 #178E2A

tetradic

#2A178E #8E173F #7B8E17 #178E66

square

#2A178E #8E173F #7B8E17 #178E66

split-complementary

#2A178E #8E6617 #3F8E17

monochromatic

#0B0625 #1A0E59 #2A178E #3A20C3 #593FE0

Accessibility & contrast

On white

13.03

#2A178E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.61

#2A178E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2A178E

13.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2A178E	#FFFFFF	#000000	##FFFFFF
##2A178E	1.00	13.03	1.61	13.03
#FFFFFF	13.03	1.00	21.00	1.00
#000000	1.61	21.00	1.00	21.00
##FFFFFF	13.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003591

Deuteranopia (green-blind)

#002C8C

Tritanopia (blue-blind)

#003D54

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #2a178e;
/* rgb */ color: rgb(42, 23, 142);
/* oklch */ color: oklch(33.3% 0.179 277.7);

Tailwind

colors: {
  custom: {
    50: '#7459b0',
    500: '#2a178e',
    950: '#000000',
  },
}

SCSS

$custom: #2a178e;
$custom-light: #7459b0;
$custom-dark: #000000;

JSON

{
  "hex": "#2a178e",
  "rgb": {
    "r": 42,
    "g": 23,
    "b": 142
  },
  "hsl": {
    "h": 249.58,
    "s": 72.121,
    "l": 32.353
  },
  "oklch": {
    "l": 0.33261,
    "c": 0.17872,
    "h": 277.7
  },
  "luminance": 0.03058
}

Semantic roles & 50–950 ramp

primary

#2A178E

secondary

#ACC040

accent

#EF39D2

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#0A0411

muted

#7C7980

Preview Lab

Preview with #2A178E

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

Preview Lab → · Contrast checker → · Palette generator →