#4B99FC
Closest named color: Chefchaouen Blue (#4895EF). oklch(68.1% 0.166 255.6), rgb(75, 153, 252).
Aa
Black text reads best on this color (7.26:1).
About this color
#4B99FC is a medium-light, vivid blue. In OKLCH its lightness is 68%, its chroma 0.166 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Chefchaouen Blue (#4895EF), ΔE 0.021 away. Black text reads best on it, at 7.26:1.
| Hue family | Blues |
| Lightness | medium-light (68%) |
| Chroma | vivid (0.166) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 7.26:1 |
| White text | 2.89:1 |
Values
| HEX | #4B99FC |
| RGB | rgb(75, 153, 252) |
| HSL | hsl(214, 97%, 64%) |
| OKLCH | oklch(68.1% 0.166 255.6) |
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 #4B99FC | 2.89:1 | Fails | Lc -60.2 | Content text, not long reading |
| Black text on #4B99FC | 7.26:1 | AAA | Lc 49.2 | Large or bold text, headings |
| #4B99FC text on white | 2.89:1 | Fails | Lc 54.9 | Large or bold text, headings |
| #4B99FC text on black | 7.26:1 | AAA | Lc -46.9 | 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
#EFF6FF
oklch(97% 0.014 254.6)
-
Step 100
100
#DDEBFE
oklch(93.5% 0.03 256)
-
Step 200
200
#C1DCFF
oklch(88.6% 0.056 255)
-
Step 300
300
#97C4FF
oklch(81% 0.097 255.4)
-
Step 400
400 (this color)
#4B99FC
oklch(68.1% 0.166 255.6)
-
Step 500
500
#1986FF
oklch(63% 0.202 255.7)
-
Step 600
600
#0070DD
oklch(55.6% 0.187 255.6)
-
Step 700
700
#005EBB
oklch(49.1% 0.165 255.5)
-
Step 800
800
#004C9B
oklch(42.6% 0.144 255.8)
-
Step 900
900
#003F83
oklch(37.6% 0.128 255.9)
-
Step 950
950
#022550
oklch(27% 0.088 256)
#4B99FC 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) | #6BA1FF | 0.039 |
| Deuteranopia (no green cones) | #4F90FA | 0.023 |
| Tritanopia (no blue cones) | #00B0BE | 0.129 |
| Achromatopsia (no color) | #989898 | 0.166 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B99FC
#4B99FC
oklch(68.1% 0.166 255.6)
- #CB8A00
#CB8A00
oklch(68.2% 0.143 75.6)
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 #4B99FC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.021
- Cornflower Blue #6495ED ΔE 0.029
- Dodger Blue #1E90FF ΔE 0.039
- Dark Sky Blue #448EE4 ΔE 0.044
- Soft Blue #6488EA ΔE 0.049
- Periwinkle Blue #8F99FB ΔE 0.073
- Lavender Blue #8B88F8 ΔE 0.076
- Perrywinkle #8F8CE7 ΔE 0.079
Use #4B99FC 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.