#557DBE#557DBE

#557DBE is a mid, moderate blue. Relative luminance 0.203; OKLCH L 58.9% C 0.110 H 259.7°. Best body text is #000000 at 5.06:1 contrast (WCAG AA passes).

Color values

HEX	#557DBE
RGB	rgb(85, 125, 190)
HSL	hsl(217, 45%, 54%)
HSV	hsv(217, 55%, 75%)
CMYK	cmyk(55.3%, 34.2%, 0%, 25.5%)
CIE-LAB	lab(52.19, 5.30, -38.31)
CIE-LCH	lch(52.19, 38.67, 277.87°)
OKLab	oklab(58.93% -0.0196 -0.1081)
OKLCH	oklch(58.93% 0.11 259.7)
XYZ	xyz(20.3710, 20.3146, 51.5528)
Luminance	0.2032 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557DBE #BE9655

analogous

#55B2BE #557DBE #6255BE

triadic

#557DBE #BE557D #7DBE55

tetradic

#557DBE #BE55B2 #BE9655 #55BE62

square

#557DBE #BE55B2 #BE9655 #55BE62

split-complementary

#557DBE #BE6255 #B2BE55

monochromatic

#2A446E #3B609B #557DBE #819FCF #AEC1E0

Accessibility & contrast

On white

4.15

#557DBE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.06

#557DBE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557DBE

5.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557DBE	#FFFFFF	#000000	##000000
##557DBE	1.00	4.15	5.06	5.06
#FFFFFF	4.15	1.00	21.00	21.00
#000000	5.06	21.00	1.00	1.00
##000000	5.06	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6382C1

Deuteranopia (green-blind)

#5678BD

Tritanopia (blue-blind)

#128B95

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #557dbe;
/* rgb */ color: rgb(85, 125, 190);
/* oklch */ color: oklch(58.9% 0.110 259.7);

Tailwind

colors: {
  custom: {
    50: '#8ca2d2',
    500: '#557dbe',
    950: '#000000',
  },
}

SCSS

$custom: #557dbe;
$custom-light: #8ca2d2;
$custom-dark: #000000;

JSON

{
  "hex": "#557dbe",
  "rgb": {
    "r": 85,
    "g": 125,
    "b": 190
  },
  "hsl": {
    "h": 217.143,
    "s": 44.681,
    "l": 53.922
  },
  "oklch": {
    "l": 0.58931,
    "c": 0.10991,
    "h": 259.7
  },
  "luminance": 0.20316
}

Semantic roles & 50–950 ramp

primary

#557DBE

secondary

#CEBDA1

accent

#A353D4

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0D0F14

muted

#7D7E82

Preview Lab

Preview with #557DBE

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

Preview Lab → · Contrast checker → · Palette generator →