#2533B1#2533B1

#2533B1 is a dark, vivid blue. Relative luminance 0.059; OKLCH L 40.6% C 0.196 H 269.5°. Best body text is #FFFFFF at 9.60:1 contrast (WCAG AA passes).

Color values

HEX	#2533B1
RGB	rgb(37, 51, 177)
HSL	hsl(234, 65%, 42%)
HSV	hsv(234, 79%, 69%)
CMYK	cmyk(79.1%, 71.2%, 0%, 30.6%)
CIE-LAB	lab(29.25, 40.07, -67.82)
CIE-LCH	lch(29.25, 78.77, 300.57°)
OKLab	oklab(40.65% -0.0017 -0.1964)
OKLCH	oklch(40.65% 0.196 269.5)
XYZ	xyz(9.8799, 5.9342, 42.2112)
Luminance	0.0593 (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

#2533B1 #B1A325

analogous

#2579B1 #2533B1 #5D25B1

triadic

#2533B1 #B12533 #33B125

tetradic

#2533B1 #B12579 #B1A325 #25B15D

square

#2533B1 #B12579 #B1A325 #25B15D

split-complementary

#2533B1 #B15D25 #79B125

monochromatic

#10164C #1A247E #2533B1 #3D4CD6 #6F7BE1

Accessibility & contrast

On white

9.60

#2533B1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.19

#2533B1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2533B1

9.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2533B1	#FFFFFF	#000000	##FFFFFF
##2533B1	1.00	9.60	2.19	9.60
#FFFFFF	9.60	1.00	21.00	1.00
#000000	2.19	21.00	1.00	21.00
##FFFFFF	9.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CB5

Deuteranopia (green-blind)

#003EAF

Tritanopia (blue-blind)

#00576E

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #2533b1;
/* rgb */ color: rgb(37, 51, 177);
/* oklch */ color: oklch(40.6% 0.196 269.5);

Tailwind

colors: {
  custom: {
    50: '#786bca',
    500: '#2533b1',
    950: '#000000',
  },
}

SCSS

$custom: #2533b1;
$custom-light: #786bca;
$custom-dark: #000000;

JSON

{
  "hex": "#2533b1",
  "rgb": {
    "r": 37,
    "g": 51,
    "b": 177
  },
  "hsl": {
    "h": 234,
    "s": 65.421,
    "l": 41.961
  },
  "oklch": {
    "l": 0.40649,
    "c": 0.19644,
    "h": 269.5
  },
  "luminance": 0.05935
}

Semantic roles & 50–950 ramp

primary

#2533B1

secondary

#C8BE6A

accent

#D73FE8

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #2533B1

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

Preview Lab → · Contrast checker → · Palette generator →