#478BDC
Closest named color: Dark Sky Blue (#448EE4). oklch(63% 0.141 254.3), rgb(71, 139, 220).
Aa
Black text reads best on this color (5.99:1).
About this color
#478BDC is a medium-light, vivid blue. In OKLCH its lightness is 63%, its chroma 0.141 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.013 away. Black text reads best on it, at 5.99:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.141) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 5.99:1 |
| White text | 3.50:1 |
Values
| HEX | #478BDC |
| RGB | rgb(71, 139, 220) |
| HSL | hsl(213, 68%, 57%) |
| OKLCH | oklch(63% 0.141 254.3) |
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 #478BDC | 3.50:1 | AA large text | Lc -67.8 | Content text, not long reading |
| Black text on #478BDC | 5.99:1 | AA | Lc 41.8 | Non-text elements, placeholder text |
| #478BDC text on white | 3.50:1 | AA large text | Lc 62.3 | Content text, not long reading |
| #478BDC text on black | 5.99:1 | AA | Lc -39.4 | 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 500.
-
Step 50
50
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E1EBF7
oklch(93.6% 0.019 252.9)
-
Step 200
200
#C8DBF3
oklch(88.5% 0.039 254.3)
-
Step 300
300
#A2C4ED
oklch(81% 0.069 253.4)
-
Step 400
400
#6FA4E4
oklch(70.8% 0.11 253.8)
-
Step 500
500 (this color)
#478BDC
oklch(63% 0.141 254.3)
-
Step 600
600
#2673CA
oklch(55.5% 0.154 254.5)
-
Step 700
700
#1860AF
oklch(49.1% 0.143 254.6)
-
Step 800
800
#174F8D
oklch(42.7% 0.117 254.2)
-
Step 900
900
#1A4271
oklch(37.7% 0.092 254.4)
-
Step 950
950
#112742
oklch(27% 0.058 254.7)
#478BDC 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) | #6791DF | 0.038 |
| Deuteranopia (no green cones) | #5183DA | 0.022 |
| Tritanopia (no blue cones) | #009EA9 | 0.111 |
| Achromatopsia (no color) | #898989 | 0.141 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #478BDC
#478BDC
oklch(63% 0.141 254.3)
- #B87B00
#B87B00
oklch(63% 0.133 74.4)
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 #478BDC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.013
- Chefchaouen Blue #4895EF ΔE 0.036
- Soft Blue #6488EA ΔE 0.038
- Water Blue #0E87CC ΔE 0.043
- Cornflower Blue #6495ED ΔE 0.048
- Dodger Blue #1E90FF ΔE 0.054
- Cool Blue #4984B8 ΔE 0.055
- Faded Blue #658CBB ΔE 0.057
Use #478BDC 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.