#2531BC#2531BC

#2531BC is a dark, highly saturated blue. Relative luminance 0.062; OKLCH L 41.5% C 0.212 H 269.4°. Best body text is #FFFFFF at 9.36:1 contrast (WCAG AA passes).

Color values

HEX	#2531BC
RGB	rgb(37, 49, 188)
HSL	hsl(235, 67%, 44%)
HSV	hsv(235, 80%, 74%)
CMYK	cmyk(80.3%, 73.9%, 0%, 26.3%)
CIE-LAB	lab(29.96, 45.08, -73.18)
CIE-LCH	lch(29.96, 85.95, 301.64°)
OKLab	oklab(41.5% -0.0023 -0.212)
OKLCH	oklch(41.5% 0.212 269.4)
XYZ	xyz(10.9353, 6.2195, 48.1914)
Luminance	0.0622 (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

#2531BC #BCB025

analogous

#257DBC #2531BC #6525BC

triadic

#2531BC #BC2531 #31BC25

tetradic

#2531BC #BC257D #BCB025 #25BC65

square

#2531BC #BC257D #BCB025 #25BC65

split-complementary

#2531BC #BC6525 #7DBC25

monochromatic

#111656 #1B2489 #2531BC #4450DA #7780E4

Accessibility & contrast

On white

9.36

#2531BC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.24

#2531BC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2531BC

9.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2531BC	#FFFFFF	#000000	##FFFFFF
##2531BC	1.00	9.36	2.24	9.36
#FFFFFF	9.36	1.00	21.00	1.00
#000000	2.24	21.00	1.00	21.00
##FFFFFF	9.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EC0

Deuteranopia (green-blind)

#003FBA

Tritanopia (blue-blind)

#005A74

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #2531bc;
/* rgb */ color: rgb(37, 49, 188);
/* oklch */ color: oklch(41.5% 0.212 269.4);

Tailwind

colors: {
  custom: {
    50: '#7b6ad2',
    500: '#2531bc',
    950: '#000000',
  },
}

SCSS

$custom: #2531bc;
$custom-light: #7b6ad2;
$custom-dark: #000000;

JSON

{
  "hex": "#2531bc",
  "rgb": {
    "r": 37,
    "g": 49,
    "b": 188
  },
  "hsl": {
    "h": 235.232,
    "s": 67.111,
    "l": 44.118
  },
  "oklch": {
    "l": 0.415,
    "c": 0.21201,
    "h": 269.4
  },
  "luminance": 0.06221
}

Semantic roles & 50–950 ramp

primary

#2531BC

secondary

#CCC571

accent

#DC3EEA

background

#F8F6FD

surface

#EFEBFA

border

#CAC6D3

text

#0B0614

muted

#7C7A83

Preview Lab

Preview with #2531BC

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

Preview Lab → · Contrast checker → · Palette generator →