#2533B2#2533B2

#2533B2 is a dark, vivid blue. Relative luminance 0.060; OKLCH L 40.8% C 0.198 H 269.5°. Best body text is #FFFFFF at 9.57:1 contrast (WCAG AA passes).

Color values

HEX	#2533B2
RGB	rgb(37, 51, 178)
HSL	hsl(234, 66%, 42%)
HSV	hsv(234, 79%, 70%)
CMYK	cmyk(79.2%, 71.3%, 0%, 30.2%)
CIE-LAB	lab(29.35, 40.42, -68.25)
CIE-LCH	lch(29.35, 79.32, 300.64°)
OKLab	oklab(40.75% -0.0018 -0.1977)
OKLCH	oklch(40.75% 0.198 269.5)
XYZ	xyz(9.9799, 5.9742, 42.7380)
Luminance	0.0597 (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

#2533B2 #B2A425

analogous

#2579B2 #2533B2 #5E25B2

triadic

#2533B2 #B22533 #33B225

tetradic

#2533B2 #B22579 #B2A425 #25B25E

square

#2533B2 #B22579 #B2A425 #25B25E

split-complementary

#2533B2 #B25E25 #79B225

monochromatic

#10164D #1A247F #2533B2 #3D4DD7 #707BE1

Accessibility & contrast

On white

9.57

#2533B2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.19

#2533B2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2533B2

9.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2533B2	#FFFFFF	#000000	##FFFFFF
##2533B2	1.00	9.57	2.19	9.57
#FFFFFF	9.57	1.00	21.00	1.00
#000000	2.19	21.00	1.00	21.00
##FFFFFF	9.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CB6

Deuteranopia (green-blind)

#003EB0

Tritanopia (blue-blind)

#00576F

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #2533b2;
/* rgb */ color: rgb(37, 51, 178);
/* oklch */ color: oklch(40.8% 0.198 269.5);

Tailwind

colors: {
  custom: {
    50: '#796bca',
    500: '#2533b2',
    950: '#000000',
  },
}

SCSS

$custom: #2533b2;
$custom-light: #796bca;
$custom-dark: #000000;

JSON

{
  "hex": "#2533b2",
  "rgb": {
    "r": 37,
    "g": 51,
    "b": 178
  },
  "hsl": {
    "h": 234.043,
    "s": 65.581,
    "l": 42.157
  },
  "oklch": {
    "l": 0.40752,
    "c": 0.19769,
    "h": 269.5
  },
  "luminance": 0.05975
}

Semantic roles & 50–950 ramp

primary

#2533B2

secondary

#C8BF6B

accent

#D83FE9

background

#F8F6FC

surface

#EFEBF9

border

#CAC6D2

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #2533B2

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

Preview Lab → · Contrast checker → · Palette generator →