#255FDA#255FDA

#255FDA is a mid, vivid blue. Relative luminance 0.136; OKLCH L 52.4% C 0.198 H 262.6°. Best body text is #FFFFFF at 5.63:1 contrast (WCAG AA passes).

Color values

HEX	#255FDA
RGB	rgb(37, 95, 218)
HSL	hsl(221, 71%, 50%)
HSV	hsv(221, 83%, 85%)
CMYK	cmyk(83%, 56.4%, 0%, 14.5%)
CIE-LAB	lab(43.71, 27.11, -68.03)
CIE-LCH	lch(43.71, 73.23, 291.73°)
OKLab	oklab(52.44% -0.0254 -0.1966)
OKLCH	oklch(52.44% 0.198 262.6)
XYZ	xyz(17.5055, 13.6375, 68.0257)
Luminance	0.1364 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#255FDA #DAA025

analogous

#25BADA #255FDA #4525DA

triadic

#255FDA #DA255F #5FDA25

tetradic

#255FDA #DA25BA #DAA025 #25DA45

square

#255FDA #DA25BA #DAA025 #25DA45

split-complementary

#255FDA #DA4525 #BADA25

monochromatic

#133171 #1C48A6 #255FDA #5985E3 #8EACEC

Accessibility & contrast

On white

5.63

#255FDA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.73

#255FDA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #255FDA

5.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##255FDA	#FFFFFF	#000000	##FFFFFF
##255FDA	1.00	5.63	3.73	5.63
#FFFFFF	5.63	1.00	21.00	1.00
#000000	3.73	21.00	1.00	21.00
##FFFFFF	5.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0070DE

Deuteranopia (green-blind)

#005FD8

Tritanopia (blue-blind)

#007E93

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #255fda;
/* rgb */ color: rgb(37, 95, 218);
/* oklch */ color: oklch(52.4% 0.198 262.6);

Tailwind

colors: {
  custom: {
    50: '#7f8be6',
    500: '#255fda',
    950: '#000000',
  },
}

SCSS

$custom: #255fda;
$custom-light: #7f8be6;
$custom-dark: #000000;

JSON

{
  "hex": "#255fda",
  "rgb": {
    "r": 37,
    "g": 95,
    "b": 218
  },
  "hsl": {
    "h": 220.773,
    "s": 70.98,
    "l": 50
  },
  "oklch": {
    "l": 0.52436,
    "c": 0.19823,
    "h": 262.6
  },
  "luminance": 0.1364
}

Semantic roles & 50–950 ramp

primary

#255FDA

secondary

#D6BC85

accent

#B43AEE

background

#F8F8FE

surface

#F0F0FC

border

#CBCBD5

text

#0C0C16

muted

#7D7D84

Preview Lab

Preview with #255FDA

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

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