#4E81D9
Closest named color: Dark Sky Blue (#448EE4). oklch(61% 0.145 260.6), rgb(78, 129, 217).
Aa
Black text reads best on this color (5.46:1).
About this color
#4E81D9 is a medium-dark, vivid blue. In OKLCH its lightness is 61%, its chroma 0.145 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.035 away. Black text reads best on it, at 5.46:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.145) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 5.46:1 |
| White text | 3.84:1 |
Values
| HEX | #4E81D9 |
| RGB | rgb(78, 129, 217) |
| HSL | hsl(218, 65%, 58%) |
| OKLCH | oklch(61% 0.145 260.6) |
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 #4E81D9 | 3.84:1 | AA large text | Lc -71.2 | Content text, not long reading |
| Black text on #4E81D9 | 5.46:1 | AA | Lc 38.4 | Non-text elements, placeholder text |
| #4E81D9 text on white | 3.84:1 | AA large text | Lc 65.7 | Content text, not long reading |
| #4E81D9 text on black | 5.46:1 | AA | Lc -36.0 | 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
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E2EAF8
oklch(93.5% 0.021 261.8)
-
Step 200
200
#CBDAF4
oklch(88.5% 0.039 261.5)
-
Step 300
300
#A7C2EF
oklch(81% 0.07 260.6)
-
Step 400
400
#77A1E7
oklch(70.7% 0.113 260.3)
-
Step 500
500 (this color)
#4E81D9
oklch(61% 0.145 260.6)
-
Step 600
600
#396FCE
oklch(55.5% 0.158 260.8)
-
Step 700
700
#2B5DB2
oklch(49.1% 0.146 260.3)
-
Step 800
800
#254C90
oklch(42.7% 0.121 260.6)
-
Step 900
900
#234073
oklch(37.7% 0.094 260.8)
-
Step 950
950
#152643
oklch(27% 0.059 260.5)
#4E81D9 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) | #5989DC | 0.026 |
| Deuteranopia (no green cones) | #457CD7 | 0.017 |
| Tritanopia (no blue cones) | #0095A2 | 0.121 |
| Achromatopsia (no color) | #828282 | 0.145 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4E81D9
#4E81D9
oklch(61% 0.145 260.6)
- #AA7900
#AA7900
oklch(61% 0.126 80.2)
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 #4E81D9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.035
- Soft Blue #6488EA ΔE 0.040
- Water Blue #0E87CC ΔE 0.046
- Windows Blue #3778BF ΔE 0.051
- Cool Blue #4984B8 ΔE 0.054
- Chefchaouen Blue #4895EF ΔE 0.057
- Steel Blue #4682B4 ΔE 0.059
- Cornflower #6A79F7 ΔE 0.061
Use #4E81D9 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.