#557EB7#557EB7

#557EB7 is a mid, moderate cyan. Relative luminance 0.203; OKLCH L 58.8% C 0.099 H 256.8°. Best body text is #000000 at 5.05:1 contrast (WCAG AA passes).

Color values

HEX	#557EB7
RGB	rgb(85, 126, 183)
HSL	hsl(215, 40%, 53%)
HSV	hsv(215, 54%, 72%)
CMYK	cmyk(53.6%, 31.1%, 0%, 28.2%)
CIE-LAB	lab(52.14, 2.44, -34.37)
CIE-LCH	lch(52.14, 34.46, 274.07°)
OKLab	oklab(58.78% -0.0227 -0.0967)
OKLCH	oklch(58.78% 0.099 256.8)
XYZ	xyz(19.7515, 20.2704, 47.6623)
Luminance	0.2027 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557EB7 #B78E55

analogous

#55AFB7 #557EB7 #5D55B7

triadic

#557EB7 #B7557E #7EB755

tetradic

#557EB7 #B755AF #B78E55 #55B75D

square

#557EB7 #B755AF #B78E55 #55B75D

split-complementary

#557EB7 #B75D55 #AFB755

monochromatic

#2B4466 #3E6191 #557EB7 #809FC9 #ABBFDB

Accessibility & contrast

On white

4.15

#557EB7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.05

#557EB7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557EB7

5.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557EB7	#FFFFFF	#000000	##000000
##557EB7	1.00	4.15	5.05	5.05
#FFFFFF	4.15	1.00	21.00	21.00
#000000	5.05	21.00	1.00	1.00
##000000	5.05	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6782B9

Deuteranopia (green-blind)

#5B78B6

Tritanopia (blue-blind)

#1F8B92

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #557eb7;
/* rgb */ color: rgb(85, 126, 183);
/* oklch */ color: oklch(58.8% 0.099 256.8);

Tailwind

colors: {
  custom: {
    50: '#8ba3cd',
    500: '#557eb7',
    950: '#000000',
  },
}

SCSS

$custom: #557eb7;
$custom-light: #8ba3cd;
$custom-dark: #000000;

JSON

{
  "hex": "#557eb7",
  "rgb": {
    "r": 85,
    "g": 126,
    "b": 183
  },
  "hsl": {
    "h": 214.898,
    "s": 40.496,
    "l": 52.549
  },
  "oklch": {
    "l": 0.58782,
    "c": 0.09931,
    "h": 256.8
  },
  "luminance": 0.20272
}

Semantic roles & 50–950 ramp

primary

#557EB7

secondary

#C9B79F

accent

#9E57D0

background

#F8FAFC

surface

#F0F3F9

border

#CBCDD2

text

#0C0F13

muted

#7D7F82

Preview Lab

Preview with #557EB7

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

Preview Lab → · Contrast checker → · Palette generator →