#5777CD
Closest named color: Windows Blue (#3778BF). oklch(58.6% 0.137 266.8), rgb(87, 119, 205).
Aa
Black text reads best on this color (4.92:1).
About this color
#5777CD is a medium-dark, moderately saturated blue. In OKLCH its lightness is 59%, its chroma 0.137 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.040 away. Black text reads best on it, at 4.92:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.137) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 4.92:1 |
| White text | 4.26:1 |
Values
| HEX | #5777CD |
| RGB | rgb(87, 119, 205) |
| HSL | hsl(224, 54%, 57%) |
| OKLCH | oklch(58.6% 0.137 266.8) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #5777CD | 4.26:1 | AA large text | Lc -74.8 | Content text, not long reading |
| Black text on #5777CD | 4.92:1 | AA | Lc 34.8 | Non-text elements, placeholder text |
| #5777CD text on white | 4.26:1 | AA large text | Lc 69.3 | Content text, not long reading |
| #5777CD text on black | 4.92:1 | AA | Lc -32.4 | Non-text elements, placeholder text |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 600.
-
Step 50
50
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E4EAF6
oklch(93.6% 0.017 264.5)
-
Step 200
200
#CFD9F1
oklch(88.5% 0.035 267.6)
-
Step 300
300
#AFC0E9
oklch(80.9% 0.061 267.4)
-
Step 400
400
#859FDF
oklch(70.8% 0.099 266.9)
-
Step 500
500
#6786D6
oklch(63.2% 0.126 266.8)
-
Step 600
600 (this color)
#5777CD
oklch(58.6% 0.137 266.8)
-
Step 700
700
#405BA8
oklch(49% 0.127 267.1)
-
Step 800
800
#354B88
oklch(42.7% 0.105 267)
-
Step 900
900
#2E3F6D
oklch(37.7% 0.082 267.1)
-
Step 950
950
#1B2540
oklch(27% 0.052 267.5)
#5777CD with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #5280D0 | 0.024 |
| Deuteranopia (no green cones) | #4276CB | 0.023 |
| Tritanopia (no blue cones) | #008A98 | 0.122 |
| Achromatopsia (no color) | #7A7A7A | 0.137 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5777CD
#5777CD
oklch(58.6% 0.137 266.8)
- #9B7600
#9B7600
oklch(58.6% 0.12 86.6)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #5777CD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.040
- Cool Blue #4984B8 ΔE 0.055
- Steel Blue #4682B4 ΔE 0.057
- Royal Blue #4169E1 ΔE 0.058
- Water Blue #0E87CC ΔE 0.059
- Soft Blue #6488EA ΔE 0.062
- French Blue #436BAD ΔE 0.063
- Dark Periwinkle #665FD1 ΔE 0.063
Use #5777CD in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.