#4F88E0
Closest named color: Dark Sky Blue (#448EE4). oklch(63% 0.146 258.8), rgb(79, 136, 224).
Aa
Black text reads best on this color (5.93:1).
About this color
#4F88E0 is a medium-light, vivid blue. In OKLCH its lightness is 63%, its chroma 0.146 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.017 away. Black text reads best on it, at 5.93:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.146) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 5.93:1 |
| White text | 3.54:1 |
Values
| HEX | #4F88E0 |
| RGB | rgb(79, 136, 224) |
| HSL | hsl(216, 70%, 59%) |
| OKLCH | oklch(63% 0.146 258.8) |
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 #4F88E0 | 3.54:1 | AA large text | Lc -68.2 | Content text, not long reading |
| Black text on #4F88E0 | 5.93:1 | AA | Lc 41.3 | Non-text elements, placeholder text |
| #4F88E0 text on white | 3.54:1 | AA large text | Lc 62.7 | Content text, not long reading |
| #4F88E0 text on black | 5.93:1 | AA | Lc -39.0 | 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
#E2EBF8
oklch(93.7% 0.02 257.5)
-
Step 200
200
#CADAF4
oklch(88.4% 0.04 260.1)
-
Step 300
300
#A5C2EF
oklch(80.8% 0.071 259.1)
-
Step 400
400
#74A2E8
oklch(70.8% 0.115 258.6)
-
Step 500
500 (this color)
#4F88E0
oklch(63% 0.146 258.8)
-
Step 600
600
#3370CE
oklch(55.5% 0.159 259)
-
Step 700
700
#255DB3
oklch(49% 0.149 259)
-
Step 800
800
#204D91
oklch(42.8% 0.123 258.7)
-
Step 900
900
#204173
oklch(37.8% 0.094 258.6)
-
Step 950
950
#132644
oklch(27% 0.061 259.2)
#4F88E0 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) | #618FE4 | 0.028 |
| Deuteranopia (no green cones) | #4B82DE | 0.017 |
| Tritanopia (no blue cones) | #009CA9 | 0.120 |
| Achromatopsia (no color) | #888888 | 0.146 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4F88E0
#4F88E0
oklch(63% 0.146 258.8)
- #B37E00
#B37E00
oklch(63% 0.131 79.1)
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 #4F88E0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.017
- Soft Blue #6488EA ΔE 0.027
- Chefchaouen Blue #4895EF ΔE 0.037
- Cornflower Blue #6495ED ΔE 0.046
- Water Blue #0E87CC ΔE 0.051
- Dodger Blue #1E90FF ΔE 0.052
- Cornflower #6A79F7 ΔE 0.061
- Cool Blue #4984B8 ΔE 0.061
Use #4F88E0 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.