#2558B2#2558B2

#2558B2 is a mid, vivid blue. Relative luminance 0.106; OKLCH L 47.8% C 0.154 H 260.8°. Best body text is #FFFFFF at 6.74:1 contrast (WCAG AA passes).

Color values

HEX	#2558B2
RGB	rgb(37, 88, 178)
HSL	hsl(218, 66%, 42%)
HSV	hsv(218, 79%, 70%)
CMYK	cmyk(79.2%, 50.6%, 0%, 30.2%)
CIE-LAB	lab(38.87, 16.28, -52.70)
CIE-LCH	lch(38.87, 55.16, 287.17°)
OKLab	oklab(47.84% -0.0245 -0.1517)
OKLCH	oklch(47.84% 0.154 260.8)
XYZ	xyz(12.2856, 10.5857, 43.5066)
Luminance	0.1059 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2558B2 #B27F25

analogous

#259EB2 #2558B2 #3925B2

triadic

#2558B2 #B22558 #58B225

tetradic

#2558B2 #B2259E #B27F25 #25B239

square

#2558B2 #B2259E #B27F25 #25B239

split-complementary

#2558B2 #B23925 #9EB225

monochromatic

#10264D #1A3F7F #2558B2 #3D75D7 #7099E1

Accessibility & contrast

On white

6.74

#2558B2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.12

#2558B2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2558B2

6.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2558B2	#FFFFFF	#000000	##FFFFFF
##2558B2	1.00	6.74	3.12	6.74
#FFFFFF	6.74	1.00	21.00	1.00
#000000	3.12	21.00	1.00	21.00
##FFFFFF	6.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2062B5

Deuteranopia (green-blind)

#0055B0

Tritanopia (blue-blind)

#006E7C

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #2558b2;
/* rgb */ color: rgb(37, 88, 178);
/* oklch */ color: oklch(47.8% 0.154 260.8);

Tailwind

colors: {
  custom: {
    50: '#7686ca',
    500: '#2558b2',
    950: '#000000',
  },
}

SCSS

$custom: #2558b2;
$custom-light: #7686ca;
$custom-dark: #000000;

JSON

{
  "hex": "#2558b2",
  "rgb": {
    "r": 37,
    "g": 88,
    "b": 178
  },
  "hsl": {
    "h": 218.298,
    "s": 65.581,
    "l": 42.157
  },
  "oklch": {
    "l": 0.47843,
    "c": 0.15363,
    "h": 260.8
  },
  "luminance": 0.10587
}

Semantic roles & 50–950 ramp

primary

#2558B2

secondary

#C8A66B

accent

#AB3FE9

background

#F7F8FC

surface

#EEEFF8

border

#C9CAD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #2558B2

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

Preview Lab → · Contrast checker → · Palette generator →