#2637B0#2637B0

#2637B0 is a dark, vivid blue. Relative luminance 0.063; OKLCH L 41.3% C 0.191 H 269.2°. Best body text is #FFFFFF at 9.31:1 contrast (WCAG AA passes).

Color values

HEX	#2637B0
RGB	rgb(38, 55, 176)
HSL	hsl(233, 64%, 42%)
HSV	hsv(233, 78%, 69%)
CMYK	cmyk(78.4%, 68.8%, 0%, 31%)
CIE-LAB	lab(30.10, 37.32, -65.81)
CIE-LCH	lch(30.10, 75.66, 299.55°)
OKLab	oklab(41.25% -0.0025 -0.1905)
OKLCH	oklch(41.25% 0.191 269.2)
XYZ	xyz(9.9993, 6.2779, 41.7506)
Luminance	0.0628 (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

#2637B0 #B09F26

analogous

#267CB0 #2637B0 #5A26B0

triadic

#2637B0 #B02637 #37B026

tetradic

#2637B0 #B0267C #B09F26 #26B05A

square

#2637B0 #B0267C #B09F26 #26B05A

split-complementary

#2637B0 #B05A26 #7CB026

monochromatic

#10184B #1B277E #2637B0 #3E51D5 #707EE0

Accessibility & contrast

On white

9.31

#2637B0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.26

#2637B0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2637B0

9.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2637B0	#FFFFFF	#000000	##FFFFFF
##2637B0	1.00	9.31	2.26	9.31
#FFFFFF	9.31	1.00	21.00	1.00
#000000	2.26	21.00	1.00	21.00
##FFFFFF	9.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EB4

Deuteranopia (green-blind)

#0040AE

Tritanopia (blue-blind)

#00586F

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #2637b0;
/* rgb */ color: rgb(38, 55, 176);
/* oklch */ color: oklch(41.3% 0.191 269.2);

Tailwind

colors: {
  custom: {
    50: '#786ec9',
    500: '#2637b0',
    950: '#000000',
  },
}

SCSS

$custom: #2637b0;
$custom-light: #786ec9;
$custom-dark: #000000;

JSON

{
  "hex": "#2637b0",
  "rgb": {
    "r": 38,
    "g": 55,
    "b": 176
  },
  "hsl": {
    "h": 232.609,
    "s": 64.486,
    "l": 41.961
  },
  "oklch": {
    "l": 0.41252,
    "c": 0.19057,
    "h": 269.2
  },
  "luminance": 0.06279
}

Semantic roles & 50–950 ramp

primary

#2637B0

secondary

#C7BC6B

accent

#D340E7

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #2637B0

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

Preview Lab → · Contrast checker → · Palette generator →