#2640B0#2640B0

#2640B0 is a dark, vivid blue. Relative luminance 0.072; OKLCH L 42.8% C 0.180 H 267.6°. Best body text is #FFFFFF at 8.60:1 contrast (WCAG AA passes).

Color values

HEX	#2640B0
RGB	rgb(38, 64, 176)
HSL	hsl(229, 64%, 42%)
HSV	hsv(229, 78%, 69%)
CMYK	cmyk(78.4%, 63.6%, 0%, 31%)
CIE-LAB	lab(32.29, 31.53, -62.23)
CIE-LCH	lch(32.29, 69.76, 296.87°)
OKLab	oklab(42.85% -0.0074 -0.18)
OKLCH	oklch(42.85% 0.18 267.6)
XYZ	xyz(10.4665, 7.2123, 41.9064)
Luminance	0.0721 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2640B0 #B09626

analogous

#2685B0 #2640B0 #5126B0

triadic

#2640B0 #B02640 #40B026

tetradic

#2640B0 #B02685 #B09626 #26B051

square

#2640B0 #B02685 #B09626 #26B051

split-complementary

#2640B0 #B05126 #85B026

monochromatic

#101B4B #1B2E7E #2640B0 #3E5AD5 #7085E0

Accessibility & contrast

On white

8.60

#2640B0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.44

#2640B0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2640B0

8.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2640B0	#FFFFFF	#000000	##FFFFFF
##2640B0	1.00	8.60	2.44	8.60
#FFFFFF	8.60	1.00	21.00	1.00
#000000	2.44	21.00	1.00	21.00
##FFFFFF	8.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053B4

Deuteranopia (green-blind)

#0046AE

Tritanopia (blue-blind)

#005D72

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #2640b0;
/* rgb */ color: rgb(38, 64, 176);
/* oklch */ color: oklch(42.8% 0.180 267.6);

Tailwind

colors: {
  custom: {
    50: '#7774c9',
    500: '#2640b0',
    950: '#000000',
  },
}

SCSS

$custom: #2640b0;
$custom-light: #7774c9;
$custom-dark: #000000;

JSON

{
  "hex": "#2640b0",
  "rgb": {
    "r": 38,
    "g": 64,
    "b": 176
  },
  "hsl": {
    "h": 228.696,
    "s": 64.486,
    "l": 41.961
  },
  "oklch": {
    "l": 0.42849,
    "c": 0.18017,
    "h": 267.6
  },
  "luminance": 0.07213
}

Semantic roles & 50–950 ramp

primary

#2640B0

secondary

#C7B66B

accent

#C840E7

background

#F7F7FC

surface

#EEEDF8

border

#C9C8D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #2640B0

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

Preview Lab → · Contrast checker → · Palette generator →