#2640A4#2640A4

#2640A4 is a dark, vivid blue. Relative luminance 0.068; OKLCH L 41.8% C 0.164 H 267.4°. Best body text is #FFFFFF at 8.93:1 contrast (WCAG AA passes).

Color values

HEX	#2640A4
RGB	rgb(38, 64, 164)
HSL	hsl(228, 62%, 40%)
HSV	hsv(228, 77%, 64%)
CMYK	cmyk(76.8%, 61%, 0%, 35.7%)
CIE-LAB	lab(31.25, 26.99, -56.74)
CIE-LCH	lch(31.25, 62.83, 295.44°)
OKLab	oklab(41.76% -0.0073 -0.1639)
OKLCH	oklch(41.76% 0.164 267.4)
XYZ	xyz(9.3312, 6.7582, 35.9274)
Luminance	0.0676 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2640A4 #A48A26

analogous

#267FA4 #2640A4 #4B26A4

triadic

#2640A4 #A42640 #40A426

tetradic

#2640A4 #A4267F #A48A26 #26A44B

square

#2640A4 #A4267F #A48A26 #26A44B

split-complementary

#2640A4 #A44B26 #7FA426

monochromatic

#0F1941 #1A2D72 #2640A4 #3756D1 #6880DC

Accessibility & contrast

On white

8.93

#2640A4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.35

#2640A4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2640A4

8.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2640A4	#FFFFFF	#000000	##FFFFFF
##2640A4	1.00	8.93	2.35	8.93
#FFFFFF	8.93	1.00	21.00	1.00
#000000	2.35	21.00	1.00	21.00
##FFFFFF	8.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050A7

Deuteranopia (green-blind)

#0044A2

Tritanopia (blue-blind)

#00596B

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #2640a4;
/* rgb */ color: rgb(38, 64, 164);
/* oklch */ color: oklch(41.8% 0.164 267.4);

Tailwind

colors: {
  custom: {
    50: '#7474c0',
    500: '#2640a4',
    950: '#000000',
  },
}

SCSS

$custom: #2640a4;
$custom-light: #7474c0;
$custom-dark: #000000;

JSON

{
  "hex": "#2640a4",
  "rgb": {
    "r": 38,
    "g": 64,
    "b": 164
  },
  "hsl": {
    "h": 227.619,
    "s": 62.376,
    "l": 39.608
  },
  "oklch": {
    "l": 0.41762,
    "c": 0.16409,
    "h": 267.4
  },
  "luminance": 0.06759
}

Semantic roles & 50–950 ramp

primary

#2640A4

secondary

#C2AF64

accent

#C442E5

background

#F7F7FB

surface

#EEEDF7

border

#C9C8D0

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #2640A4

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

Preview Lab → · Contrast checker → · Palette generator →