#478CC5
Closest named color: Cool Blue (#4984B8). oklch(62% 0.111 245.9), rgb(71, 140, 197).
Aa
Black text reads best on this color (5.82:1).
About this color
#478CC5 is a medium-light, moderately saturated blue. In OKLCH its lightness is 62%, its chroma 0.111 and its hue 246°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Blue (#4984B8), ΔE 0.026 away. Black text reads best on it, at 5.82:1.
| Hue family | Blues |
| Lightness | medium-light (62%) |
| Chroma | moderately saturated (0.111) |
| Temperature | cool |
| Nearest name | Cool Blue (#4984B8) |
| Black text | 5.82:1 |
| White text | 3.60:1 |
Values
| HEX | #478CC5 |
| RGB | rgb(71, 140, 197) |
| HSL | hsl(207, 52%, 53%) |
| OKLCH | oklch(62% 0.111 245.9) |
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 #478CC5 | 3.60:1 | AA large text | Lc -68.9 | Content text, not long reading |
| Black text on #478CC5 | 5.82:1 | AA | Lc 40.7 | Non-text elements, placeholder text |
| #478CC5 text on white | 3.60:1 | AA large text | Lc 63.4 | Content text, not long reading |
| #478CC5 text on black | 5.82:1 | AA | Lc -38.3 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E2EBF4
oklch(93.6% 0.016 248)
-
Step 200
200
#C9DCEC
oklch(88.5% 0.03 243.4)
-
Step 300
300
#A4C5E2
oklch(80.9% 0.054 245.1)
-
Step 400
400
#72A6D4
oklch(70.6% 0.087 246.1)
-
Step 500
500 (this color)
#478CC5
oklch(62% 0.111 245.9)
-
Step 600
600
#2979B5
oklch(55.7% 0.12 245.4)
-
Step 700
700
#1A659C
oklch(49.1% 0.113 245.8)
-
Step 800
800
#19537F
oklch(42.8% 0.094 245.8)
-
Step 900
900
#1C4566
oklch(37.8% 0.073 245.8)
-
Step 950
950
#12283B
oklch(26.9% 0.045 246.6)
#478CC5 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) | #738EC8 | 0.048 |
| Deuteranopia (no green cones) | #6281C4 | 0.038 |
| Tritanopia (no blue cones) | #009AA0 | 0.085 |
| Achromatopsia (no color) | #878787 | 0.111 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #478CC5
#478CC5
oklch(62% 0.111 245.9)
- #B37734
#B37734
oklch(61.9% 0.111 65.9)
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 #478CC5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Blue #4984B8 ΔE 0.026
- Faded Blue #658CBB ΔE 0.032
- Steel Blue #4682B4 ΔE 0.034
- Water Blue #0E87CC ΔE 0.037
- Off Blue #5684AE ΔE 0.037
- Dusty Blue #5A86AD ΔE 0.038
- Blue NCS #118AB2 ΔE 0.045
- Dark Sky Blue #448EE4 ΔE 0.047
Use #478CC5 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.