#557DB9#557DB9

#557DB9 is a mid, moderate blue. Relative luminance 0.201; OKLCH L 58.7% C 0.103 H 258.3°. Best body text is #000000 at 5.02:1 contrast (WCAG AA passes).

Color values

HEX	#557DB9
RGB	rgb(85, 125, 185)
HSL	hsl(216, 42%, 53%)
HSV	hsv(216, 54%, 73%)
CMYK	cmyk(54.1%, 32.4%, 0%, 27.5%)
CIE-LAB	lab(51.95, 3.68, -35.82)
CIE-LCH	lch(51.95, 36.01, 275.87°)
OKLab	oklab(58.66% -0.0209 -0.1009)
OKLCH	oklch(58.66% 0.103 258.3)
XYZ	xyz(19.8339, 20.0998, 48.7240)
Luminance	0.2010 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557DB9 #B99155

analogous

#55AFB9 #557DB9 #5F55B9

triadic

#557DB9 #B9557D #7DB955

tetradic

#557DB9 #B955AF #B99155 #55B95F

square

#557DB9 #B955AF #B99155 #55B95F

split-complementary

#557DB9 #B95F55 #AFB955

monochromatic

#2B4469 #3D6094 #557DB9 #809ECB #ACBFDD

Accessibility & contrast

On white

4.18

#557DB9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.02

#557DB9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557DB9

5.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557DB9	#FFFFFF	#000000	##000000
##557DB9	1.00	4.18	5.02	5.02
#FFFFFF	4.18	1.00	21.00	21.00
#000000	5.02	21.00	1.00	1.00
##000000	5.02	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6581BC

Deuteranopia (green-blind)

#5978B8

Tritanopia (blue-blind)

#1C8A93

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #557db9;
/* rgb */ color: rgb(85, 125, 185);
/* oklch */ color: oklch(58.7% 0.103 258.3);

Tailwind

colors: {
  custom: {
    50: '#8ba2ce',
    500: '#557db9',
    950: '#000000',
  },
}

SCSS

$custom: #557db9;
$custom-light: #8ba2ce;
$custom-dark: #000000;

JSON

{
  "hex": "#557db9",
  "rgb": {
    "r": 85,
    "g": 125,
    "b": 185
  },
  "hsl": {
    "h": 216,
    "s": 41.667,
    "l": 52.941
  },
  "oklch": {
    "l": 0.58663,
    "c": 0.10306,
    "h": 258.3
  },
  "luminance": 0.20101
}

Semantic roles & 50–950 ramp

primary

#557DB9

secondary

#CBB99F

accent

#A056D1

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0C0F13

muted

#7D7E82

Preview Lab

Preview with #557DB9

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

Preview Lab → · Contrast checker → · Palette generator →