#4F9FF3
Closest named color: Chefchaouen Blue (#4895EF). oklch(69% 0.147 251.7), rgb(79, 159, 243).
Aa
Black text reads best on this color (7.58:1).
About this color
#4F9FF3 is a medium-light, vivid blue. In OKLCH its lightness is 69%, its chroma 0.147 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is Chefchaouen Blue (#4895EF), ΔE 0.028 away. Black text reads best on it, at 7.58:1.
| Hue family | Blues |
| Lightness | medium-light (69%) |
| Chroma | vivid (0.147) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 7.58:1 |
| White text | 2.76:1 |
Values
| HEX | #4F9FF3 |
| RGB | rgb(79, 159, 243) |
| HSL | hsl(211, 87%, 63%) |
| OKLCH | oklch(69% 0.147 251.7) |
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 #4F9FF3 | 2.76:1 | Fails | Lc -58.4 | Large or bold text, headings |
| Black text on #4F9FF3 | 7.58:1 | AAA | Lc 50.9 | Large or bold text, headings |
| #4F9FF3 text on white | 2.76:1 | Fails | Lc 53.1 | Large or bold text, headings |
| #4F9FF3 text on black | 7.58:1 | AAA | Lc -48.7 | Large or bold text, headings |
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 400.
-
Step 50
50
#F0F6FE
oklch(97.1% 0.012 255.5)
-
Step 100
100
#DDECFC
oklch(93.7% 0.027 249.9)
-
Step 200
200
#C1DCFB
oklch(88.5% 0.052 252)
-
Step 300
300
#95C5FB
oklch(80.9% 0.092 251.9)
-
Step 400
400 (this color)
#4F9FF3
oklch(69% 0.147 251.7)
-
Step 500
500
#008AF5
oklch(63% 0.187 251.8)
-
Step 600
600
#0074CF
oklch(55.5% 0.165 251.7)
-
Step 700
700
#0061B0
oklch(49% 0.147 252)
-
Step 800
800
#005091
oklch(42.8% 0.126 251.5)
-
Step 900
900
#00427A
oklch(37.7% 0.112 251.7)
-
Step 950
950
#02274B
oklch(27.1% 0.078 252)
#4F9FF3 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) | #7AA4F7 | 0.046 |
| Deuteranopia (no green cones) | #6294F1 | 0.031 |
| Tritanopia (no blue cones) | #00B3BE | 0.114 |
| Achromatopsia (no color) | #9B9B9B | 0.147 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4F9FF3
#4F9FF3
oklch(69% 0.147 251.7)
- #D38A05
#D38A05
oklch(69.1% 0.147 71.8)
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 #4F9FF3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.028
- Cornflower Blue #6495ED ΔE 0.029
- Dark Sky Blue #448EE4 ΔE 0.050
- Dodger Blue #1E90FF ΔE 0.058
- Soft Blue #6488EA ΔE 0.060
- Periwinkle Blue #8F99FB ΔE 0.070
- Perrywinkle #8F8CE7 ΔE 0.079
- Lavender Blue #8B88F8 ΔE 0.084
Use #4F9FF3 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.