#2533B0#2533B0

#2533B0 is a dark, vivid blue. Relative luminance 0.059; OKLCH L 40.5% C 0.195 H 269.5°. Best body text is #FFFFFF at 9.64:1 contrast (WCAG AA passes).

Color values

HEX#2533B0
RGBrgb(37, 51, 176)
HSLhsl(234, 65%, 42%)
HSVhsv(234, 79%, 69%)
CMYKcmyk(79%, 71%, 0%, 31%)
CIE-LABlab(29.14, 39.72, -67.39)
CIE-LCHlch(29.14, 78.22, 300.51°)
OKLaboklab(40.55% -0.0016 -0.1952)
OKLCHoklch(40.55% 0.195 269.5)
XYZxyz(9.7806, 5.8944, 41.6881)
Luminance0.0590 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#2533B0 #B0A225
analogous
#2579B0 #2533B0 #5D25B0
triadic
#2533B0 #B02533 #33B025
tetradic
#2533B0 #B02579 #B0A225 #25B05D
square
#2533B0 #B02579 #B0A225 #25B05D
split-complementary
#2533B0 #B05D25 #79B025
monochromatic
#10164B #1A247D #2533B0 #3C4CD6 #6F7AE1

Accessibility & contrast

On white

9.64
#2533B0 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.18
#2533B0 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2533B0
9.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##2533B0#FFFFFF#000000##FFFFFF
##2533B01.009.642.189.64
#FFFFFF9.641.0021.001.00
#0000002.1821.001.0021.00
##FFFFFF9.641.0021.001.00

Color blindness preview

Protanopia (red-blind)
#004BB4
Deuteranopia (green-blind)
#003EAE
Tritanopia (blue-blind)
#00566E
Achromatopsia (no color)
#454545

Design tokens & code

CSS
--color: #2533b0;
/* rgb */ color: rgb(37, 51, 176);
/* oklch */ color: oklch(40.5% 0.195 269.5);
Tailwind
colors: {
  custom: {
    50: '#786bc9',
    500: '#2533b0',
    950: '#000000',
  },
}
SCSS
$custom: #2533b0;
$custom-light: #786bc9;
$custom-dark: #000000;
JSON
{
  "hex": "#2533b0",
  "rgb": {
    "r": 37,
    "g": 51,
    "b": 176
  },
  "hsl": {
    "h": 233.957,
    "s": 65.258,
    "l": 41.765
  },
  "oklch": {
    "l": 0.40546,
    "c": 0.19519,
    "h": 269.5
  },
  "luminance": 0.05896
}

Semantic roles & 50–950 ramp

primary
#2533B0
secondary
#C7BE6A
accent
#D740E8
background
#F8F6FC
surface
#EFEBF8
border
#CAC6D1
text
#0B0713
muted
#7C7A82

Preview Lab

Preview with #2533B0

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

Preview Lab → · Contrast checker → · Palette generator →

#2533B0 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva