#255AAA#255AAA

#255AAA is a mid, vivid blue. Relative luminance 0.106; OKLCH L 47.7% C 0.140 H 258.7°. Best body text is #FFFFFF at 6.73:1 contrast (WCAG AA passes).

Color values

HEX	#255AAA
RGB	rgb(37, 90, 170)
HSL	hsl(216, 64%, 41%)
HSV	hsv(216, 78%, 67%)
CMYK	cmyk(78.2%, 47.1%, 0%, 33.3%)
CIE-LAB	lab(38.91, 11.85, -47.91)
CIE-LCH	lch(38.91, 49.36, 283.89°)
OKLab	oklab(47.7% -0.0274 -0.1375)
OKLCH	oklch(47.7% 0.14 258.7)
XYZ	xyz(11.6722, 10.6066, 39.4545)
Luminance	0.1061 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#255AAA #AA7525

analogous

#259CAA #255AAA #3225AA

triadic

#255AAA #AA255A #5AAA25

tetradic

#255AAA #AA259C #AA7525 #25AA32

square

#255AAA #AA259C #AA7525 #25AA32

split-complementary

#255AAA #AA3225 #9CAA25

monochromatic

#0F2545 #1A3F78 #255AAA #3876D4 #6B99DF

Accessibility & contrast

On white

6.73

#255AAA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.12

#255AAA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #255AAA

6.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##255AAA	#FFFFFF	#000000	##FFFFFF
##255AAA	1.00	6.73	3.12	6.73
#FFFFFF	6.73	1.00	21.00	1.00
#000000	3.12	21.00	1.00	21.00
##FFFFFF	6.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F62AD

Deuteranopia (green-blind)

#0A56A8

Tritanopia (blue-blind)

#006D7A

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #255aaa;
/* rgb */ color: rgb(37, 90, 170);
/* oklch */ color: oklch(47.7% 0.140 258.7);

Tailwind

colors: {
  custom: {
    50: '#7488c4',
    500: '#255aaa',
    950: '#000000',
  },
}

SCSS

$custom: #255aaa;
$custom-light: #7488c4;
$custom-dark: #000000;

JSON

{
  "hex": "#255aaa",
  "rgb": {
    "r": 37,
    "g": 90,
    "b": 170
  },
  "hsl": {
    "h": 216.09,
    "s": 64.251,
    "l": 40.588
  },
  "oklch": {
    "l": 0.47699,
    "c": 0.14023,
    "h": 258.7
  },
  "luminance": 0.10608
}

Semantic roles & 50–950 ramp

primary

#255AAA

secondary

#C59F66

accent

#A541E7

background

#F7F8FC

surface

#EEEFF8

border

#C9CAD1

text

#090B13

muted

#7B7C82

Preview Lab

Preview with #255AAA

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

Preview Lab → · Contrast checker → · Palette generator →