#577FAC#577FAC
#577FAC is a mid, moderate cyan. Relative luminance 0.202; OKLCH L 58.6% C 0.083 H 252.1°. Best body text is #000000 at 5.04:1 contrast (WCAG AA passes).
Color values
| HEX | #577FAC |
|---|---|
| RGB | rgb(87, 127, 172) |
| HSL | hsl(212, 34%, 51%) |
| HSV | hsv(212, 49%, 67%) |
| CMYK | cmyk(49.4%, 26.2%, 0%, 32.5%) |
| CIE-LAB | lab(52.04, -1.12, -28.18) |
| CIE-LCH | lch(52.04, 28.20, 267.72°) |
| OKLab | oklab(58.57% -0.0254 -0.0788) |
| OKLCH | oklch(58.57% 0.083 252.1) |
| XYZ | xyz(18.9637, 20.1822, 41.9180) |
| Luminance | 0.2018 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Off Blue
#5684AE
ΔE00 2.37
Dusty Blue
#5A86AD
ΔE00 3.07
Steel Blue
#4682B4
ΔE00 3.49
Cool Blue
#4984B8
ΔE00 3.51
Slate Blue (survey)
#5B7C99
ΔE00 4.06
Steel Blue (survey)
#5A7D9A
ΔE00 4.11
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#577FAC #AC8457
analogous
#57A9AC #577FAC #5957AC
triadic
#577FAC #AC577F #7FAC57
tetradic
#577FAC #AC57A9 #AC8457 #57AC59
square
#577FAC #AC57A9 #AC8457 #57AC59
split-complementary
#577FAC #AC5957 #A9AC57
monochromatic
#2D435B #416184 #577FAC #809EC0 #A9BDD4
Accessibility & contrast
On white
4.17
#577FAC on #FFFFFF
AA ✗AA large ✓AAA ✗
On black
5.04
#577FAC on #000000
AA ✓AA large ✓AAA ✗
Best text color
#000000 on #577FAC
5.04:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##577FAC | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##577FAC | 1.00 | 4.17 | 5.04 | 5.04 |
| #FFFFFF | 4.17 | 1.00 | 21.00 | 21.00 |
| #000000 | 5.04 | 21.00 | 1.00 | 1.00 |
| ##000000 | 5.04 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#6D81AE
Deuteranopia (green-blind)
#6378AB
Tritanopia (blue-blind)
#30898E
Achromatopsia (no color)
#7C7C7C
Design tokens & code
CSS
--color: #577fac; /* rgb */ color: rgb(87, 127, 172); /* oklch */ color: oklch(58.6% 0.083 252.1);
Tailwind
colors: {
custom: {
50: '#8ba4c5',
500: '#577fac',
950: '#000000',
},
}SCSS
$custom: #577fac; $custom-light: #8ba4c5; $custom-dark: #000000;
JSON
{
"hex": "#577fac",
"rgb": {
"r": 87,
"g": 127,
"b": 172
},
"hsl": {
"h": 211.765,
"s": 33.865,
"l": 50.784
},
"oklch": {
"l": 0.5857,
"c": 0.08276,
"h": 252.1
},
"luminance": 0.20184
}Semantic roles & 50–950 ramp
primary
#577FAC
secondary
#C2B19D
accent
#975ECA
background
#F8FAFC
surface
#F0F3F8
border
#CBCDD1
text
#0C0F12
muted
#7D7F81