#557DBF#557DBF

#557DBF is a mid, moderate blue. Relative luminance 0.204; OKLCH L 59.0% C 0.111 H 260.0°. Best body text is #000000 at 5.07:1 contrast (WCAG AA passes).

Color values

HEX	#557DBF
RGB	rgb(85, 125, 191)
HSL	hsl(217, 45%, 54%)
HSV	hsv(217, 55%, 75%)
CMYK	cmyk(55.5%, 34.6%, 0%, 25.1%)
CIE-LAB	lab(52.24, 5.62, -38.81)
CIE-LCH	lch(52.24, 39.21, 278.24°)
OKLab	oklab(58.99% -0.0193 -0.1096)
OKLCH	oklch(58.99% 0.111 260)
XYZ	xyz(20.4807, 20.3585, 52.1304)
Luminance	0.2036 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557DBF #BF9755

analogous

#55B2BF #557DBF #6255BF

triadic

#557DBF #BF557D #7DBF55

tetradic

#557DBF #BF55B2 #BF9755 #55BF62

square

#557DBF #BF55B2 #BF9755 #55BF62

split-complementary

#557DBF #BF6255 #B2BF55

monochromatic

#2A4470 #3B5F9C #557DBF #819FD0 #AEC1E0

Accessibility & contrast

On white

4.14

#557DBF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.07

#557DBF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557DBF

5.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557DBF	#FFFFFF	#000000	##000000
##557DBF	1.00	4.14	5.07	5.07
#FFFFFF	4.14	1.00	21.00	21.00
#000000	5.07	21.00	1.00	1.00
##000000	5.07	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6282C2

Deuteranopia (green-blind)

#5578BE

Tritanopia (blue-blind)

#108C95

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #557dbf;
/* rgb */ color: rgb(85, 125, 191);
/* oklch */ color: oklch(59.0% 0.111 260.0);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#557dbf",
  "rgb": {
    "r": 85,
    "g": 125,
    "b": 191
  },
  "hsl": {
    "h": 217.358,
    "s": 45.299,
    "l": 54.118
  },
  "oklch": {
    "l": 0.58985,
    "c": 0.11128,
    "h": 260
  },
  "luminance": 0.2036
}

Semantic roles & 50–950 ramp

primary

#557DBF

secondary

#CEBDA1

accent

#A453D5

background

#F9F9FC

surface

#F1F2F9

border

#CBCCD2

text

#0D0F14

muted

#7E7E82

Preview Lab

Preview with #557DBF

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

Preview Lab → · Contrast checker → · Palette generator →