#557DB4#557DB4

#557DB4 is a mid, moderate cyan. Relative luminance 0.199; OKLCH L 58.4% C 0.096 H 256.6°. Best body text is #000000 at 4.98:1 contrast (WCAG AA passes).

Color values

HEX	#557DB4
RGB	rgb(85, 125, 180)
HSL	hsl(215, 39%, 52%)
HSV	hsv(215, 53%, 71%)
CMYK	cmyk(52.8%, 30.6%, 0%, 29.4%)
CIE-LAB	lab(51.72, 2.09, -33.31)
CIE-LCH	lch(51.72, 33.38, 273.58°)
OKLab	oklab(58.4% -0.0224 -0.0936)
OKLCH	oklch(58.4% 0.096 256.6)
XYZ	xyz(19.3153, 19.8924, 45.9929)
Luminance	0.1989 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557DB4 #B48C55

analogous

#55ADB4 #557DB4 #5D55B4

triadic

#557DB4 #B4557D #7DB455

tetradic

#557DB4 #B455AD #B48C55 #55B45D

square

#557DB4 #B455AD #B48C55 #55B45D

split-complementary

#557DB4 #B45D55 #ADB455

monochromatic

#2C4363 #3E608D #557DB4 #7F9DC7 #AABED9

Accessibility & contrast

On white

4.22

#557DB4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.98

#557DB4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557DB4

4.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557DB4	#FFFFFF	#000000	##000000
##557DB4	1.00	4.22	4.98	4.98
#FFFFFF	4.22	1.00	21.00	21.00
#000000	4.98	21.00	1.00	1.00
##000000	4.98	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6780B6

Deuteranopia (green-blind)

#5C77B3

Tritanopia (blue-blind)

#238990

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #557db4;
/* rgb */ color: rgb(85, 125, 180);
/* oklch */ color: oklch(58.4% 0.096 256.6);

Tailwind

colors: {
  custom: {
    50: '#8ba2ca',
    500: '#557db4',
    950: '#000000',
  },
}

SCSS

$custom: #557db4;
$custom-light: #8ba2ca;
$custom-dark: #000000;

JSON

{
  "hex": "#557db4",
  "rgb": {
    "r": 85,
    "g": 125,
    "b": 180
  },
  "hsl": {
    "h": 214.737,
    "s": 38.776,
    "l": 51.961
  },
  "oklch": {
    "l": 0.58403,
    "c": 0.09626,
    "h": 256.6
  },
  "luminance": 0.19894
}

Semantic roles & 50–950 ramp

primary

#557DB4

secondary

#C7B69E

accent

#9D59CF

background

#F8F9FC

surface

#F0F2F8

border

#CBCCD1

text

#0C0F13

muted

#7D7E82

Preview Lab

Preview with #557DB4

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

Preview Lab → · Contrast checker → · Palette generator →