#557FBF#557FBF

#557FBF is a mid, moderate blue. Relative luminance 0.209; OKLCH L 59.4% C 0.109 H 258.6°. Best body text is #000000 at 5.17:1 contrast (WCAG AA passes).

Color values

HEX	#557FBF
RGB	rgb(85, 127, 191)
HSL	hsl(216, 45%, 54%)
HSV	hsv(216, 55%, 75%)
CMYK	cmyk(55.5%, 33.5%, 0%, 25.1%)
CIE-LAB	lab(52.81, 4.42, -37.91)
CIE-LCH	lch(52.81, 38.17, 276.65°)
OKLab	oklab(59.43% -0.0216 -0.107)
OKLCH	oklch(59.43% 0.109 258.6)
XYZ	xyz(20.7364, 20.8700, 52.2157)
Luminance	0.2087 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557FBF #BF9555

analogous

#55B4BF #557FBF #6055BF

triadic

#557FBF #BF557F #7FBF55

tetradic

#557FBF #BF55B4 #BF9555 #55BF60

square

#557FBF #BF55B4 #BF9555 #55BF60

split-complementary

#557FBF #BF6055 #B4BF55

monochromatic

#2A4670 #3B619C #557FBF #81A0D0 #AEC2E0

Accessibility & contrast

On white

4.06

#557FBF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.17

#557FBF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557FBF

5.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557FBF	#FFFFFF	#000000	##000000
##557FBF	1.00	4.06	5.17	5.17
#FFFFFF	4.06	1.00	21.00	21.00
#000000	5.17	21.00	1.00	1.00
##000000	5.17	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6584C2

Deuteranopia (green-blind)

#5879BE

Tritanopia (blue-blind)

#0F8D96

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #557fbf;
/* rgb */ color: rgb(85, 127, 191);
/* oklch */ color: oklch(59.4% 0.109 258.6);

Tailwind

colors: {
  custom: {
    50: '#8ca3d2',
    500: '#557fbf',
    950: '#000000',
  },
}

SCSS

$custom: #557fbf;
$custom-light: #8ca3d2;
$custom-dark: #000000;

JSON

{
  "hex": "#557fbf",
  "rgb": {
    "r": 85,
    "g": 127,
    "b": 191
  },
  "hsl": {
    "h": 216.226,
    "s": 45.299,
    "l": 54.118
  },
  "oklch": {
    "l": 0.59426,
    "c": 0.10914,
    "h": 258.6
  },
  "luminance": 0.20872
}

Semantic roles & 50–950 ramp

primary

#557FBF

secondary

#CEBDA1

accent

#A153D5

background

#F9FAFC

surface

#F1F3F9

border

#CBCDD2

text

#0D0F14

muted

#7E7F82

Preview Lab

Preview with #557FBF

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

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