#2640A9#2640A9

#2640A9 is a dark, vivid blue. Relative luminance 0.069; OKLCH L 42.2% C 0.171 H 267.5°. Best body text is #FFFFFF at 8.79:1 contrast (WCAG AA passes).

Color values

HEX	#2640A9
RGB	rgb(38, 64, 169)
HSL	hsl(228, 63%, 41%)
HSV	hsv(228, 78%, 66%)
CMYK	cmyk(77.5%, 62.1%, 0%, 33.7%)
CIE-LAB	lab(31.68, 28.90, -59.05)
CIE-LCH	lch(31.68, 65.74, 296.08°)
OKLab	oklab(42.21% -0.0073 -0.1707)
OKLCH	oklch(42.21% 0.171 267.5)
XYZ	xyz(9.7917, 6.9423, 38.3524)
Luminance	0.0694 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2640A9 #A98F26

analogous

#2681A9 #2640A9 #4E26A9

triadic

#2640A9 #A92640 #40A926

tetradic

#2640A9 #A92681 #A98F26 #26A94E

square

#2640A9 #A92681 #A98F26 #26A94E

split-complementary

#2640A9 #A94E26 #81A926

monochromatic

#101A45 #1B2D77 #2640A9 #3A58D3 #6C82DE

Accessibility & contrast

On white

8.79

#2640A9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.39

#2640A9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2640A9

8.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2640A9	#FFFFFF	#000000	##FFFFFF
##2640A9	1.00	8.79	2.39	8.79
#FFFFFF	8.79	1.00	21.00	1.00
#000000	2.39	21.00	1.00	21.00
##FFFFFF	8.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051AC

Deuteranopia (green-blind)

#0045A7

Tritanopia (blue-blind)

#005B6E

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #2640a9;
/* rgb */ color: rgb(38, 64, 169);
/* oklch */ color: oklch(42.2% 0.171 267.5);

Tailwind

colors: {
  custom: {
    50: '#7574c3',
    500: '#2640a9',
    950: '#000000',
  },
}

SCSS

$custom: #2640a9;
$custom-light: #7574c3;
$custom-dark: #000000;

JSON

{
  "hex": "#2640a9",
  "rgb": {
    "r": 38,
    "g": 64,
    "b": 169
  },
  "hsl": {
    "h": 228.092,
    "s": 63.285,
    "l": 40.588
  },
  "oklch": {
    "l": 0.4221,
    "c": 0.17086,
    "h": 267.5
  },
  "luminance": 0.06943
}

Semantic roles & 50–950 ramp

primary

#2640A9

secondary

#C4B267

accent

#C641E6

background

#F7F7FC

surface

#EEEDF8

border

#C9C8D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #2640A9

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

Preview Lab → · Contrast checker → · Palette generator →