#478FCD
Closest named color: Dark Sky Blue (#448EE4). oklch(63.1% 0.118 247), rgb(71, 143, 205).
Aa
Black text reads best on this color (6.07:1).
About this color
#478FCD is a medium-light, moderately saturated blue. In OKLCH its lightness is 63%, its chroma 0.118 and its hue 247°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.036 away. Black text reads best on it, at 6.07:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.118) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 6.07:1 |
| White text | 3.45:1 |
Values
| HEX | #478FCD |
| RGB | rgb(71, 143, 205) |
| HSL | hsl(208, 57%, 54%) |
| OKLCH | oklch(63.1% 0.118 247) |
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 #478FCD | 3.45:1 | AA large text | Lc -67.3 | Content text, not long reading |
| Black text on #478FCD | 6.07:1 | AA | Lc 42.2 | Non-text elements, placeholder text |
| #478FCD text on white | 3.45:1 | AA large text | Lc 61.8 | Content text, not long reading |
| #478FCD text on black | 6.07:1 | AA | Lc -39.9 | 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 500.
-
Step 50
50
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E1EBF5
oklch(93.5% 0.017 248)
-
Step 200
200
#C9DCEE
oklch(88.6% 0.032 246.7)
-
Step 300
300
#A3C5E5
oklch(80.9% 0.058 247)
-
Step 400
400
#70A6D8
oklch(70.7% 0.093 247.4)
-
Step 500
500 (this color)
#478FCD
oklch(63.1% 0.118 247)
-
Step 600
600
#2478BA
oklch(55.6% 0.129 247.1)
-
Step 700
700
#1565A0
oklch(49.2% 0.119 246.7)
-
Step 800
800
#155282
oklch(42.6% 0.1 247.3)
-
Step 900
900
#1A4468
oklch(37.6% 0.077 247.6)
-
Step 950
950
#10283D
oklch(26.9% 0.05 247.3)
#478FCD 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) | #7491D0 | 0.048 |
| Deuteranopia (no green cones) | #6184CC | 0.036 |
| Tritanopia (no blue cones) | #009EA5 | 0.090 |
| Achromatopsia (no color) | #8A8A8A | 0.118 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #478FCD
#478FCD
oklch(63.1% 0.118 247)
- #B97A2F
#B97A2F
oklch(63.2% 0.118 66.9)
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 #478FCD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.036
- Faded Blue #658CBB ΔE 0.037
- Cool Blue #4984B8 ΔE 0.039
- Water Blue #0E87CC ΔE 0.041
- Steel Blue #4682B4 ΔE 0.047
- Off Blue #5684AE ΔE 0.050
- Dusty Blue #5A86AD ΔE 0.050
- Chefchaouen Blue #4895EF ΔE 0.051
Use #478FCD 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.