#478AC8
Closest named color: Cool Blue (#4984B8). oklch(61.7% 0.117 248.6), rgb(71, 138, 200).
Aa
Black text reads best on this color (5.73:1).
About this color
#478AC8 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 62%, its chroma 0.117 and its hue 249°. 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 5.73:1.
| Hue family | Blues |
| Lightness | medium-dark (62%) |
| Chroma | moderately saturated (0.117) |
| Temperature | cool |
| Nearest name | Cool Blue (#4984B8) |
| Black text | 5.73:1 |
| White text | 3.66:1 |
Values
| HEX | #478AC8 |
| RGB | rgb(71, 138, 200) |
| HSL | hsl(209, 54%, 53%) |
| OKLCH | oklch(61.7% 0.117 248.6) |
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 #478AC8 | 3.66:1 | AA large text | Lc -69.5 | Content text, not long reading |
| Black text on #478AC8 | 5.73:1 | AA | Lc 40.1 | Non-text elements, placeholder text |
| #478AC8 text on white | 3.66:1 | AA large text | Lc 64.0 | Content text, not long reading |
| #478AC8 text on black | 5.73:1 | AA | Lc -37.7 | 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
#E2EBF5
oklch(93.6% 0.017 250.8)
-
Step 200
200
#CADBEE
oklch(88.5% 0.032 251.1)
-
Step 300
300
#A5C4E4
oklch(80.8% 0.056 249.4)
-
Step 400
400
#72A5D7
oklch(70.6% 0.092 248.8)
-
Step 500
500 (this color)
#478AC8
oklch(61.7% 0.117 248.6)
-
Step 600
600
#2B77B9
oklch(55.5% 0.126 248.6)
-
Step 700
700
#1D64A0
oklch(49.1% 0.118 248.7)
-
Step 800
800
#1B5282
oklch(42.8% 0.098 248.8)
-
Step 900
900
#1D4468
oklch(37.7% 0.076 248.9)
-
Step 950
950
#12283D
oklch(27% 0.048 249)
#478AC8 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) | #6F8DCB | 0.044 |
| Deuteranopia (no green cones) | #5D80C7 | 0.032 |
| Tritanopia (no blue cones) | #0099A0 | 0.091 |
| Achromatopsia (no color) | #868686 | 0.117 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #478AC8
#478AC8
oklch(61.7% 0.117 248.6)
- #B2772A
#B2772A
oklch(61.7% 0.116 69.2)
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 #478AC8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Blue #4984B8 ΔE 0.026
- Water Blue #0E87CC ΔE 0.033
- Steel Blue #4682B4 ΔE 0.034
- Faded Blue #658CBB ΔE 0.037
- Off Blue #5684AE ΔE 0.040
- Dark Sky Blue #448EE4 ΔE 0.042
- Dusty Blue #5A86AD ΔE 0.042
- Blue NCS #118AB2 ΔE 0.048
Use #478AC8 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.