#4C99FC
Closest named color: Chefchaouen Blue (#4895EF). oklch(68.1% 0.165 255.9), rgb(76, 153, 252).
Aa
Black text reads best on this color (7.26:1).
About this color
#4C99FC is a medium-light, vivid blue. In OKLCH its lightness is 68%, its chroma 0.165 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 (0.165) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 7.26:1 |
| White text | 2.88:1 |
Values
| HEX | #4C99FC |
| RGB | rgb(76, 153, 252) |
| HSL | hsl(214, 97%, 64%) |
| OKLCH | oklch(68.1% 0.165 255.9) |
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 #4C99FC | 2.88:1 | Fails | Lc -60.1 | Content text, not long reading |
| Black text on #4C99FC | 7.26:1 | AAA | Lc 49.2 | Large or bold text, headings |
| #4C99FC text on white | 2.88:1 | Fails | Lc 54.8 | Large or bold text, headings |
| #4C99FC text on black | 7.26:1 | AAA | Lc -47.0 | 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
#F0F6FF
oklch(97.1% 0.014 258.3)
-
Step 100
100
#DDEBFE
oklch(93.5% 0.03 256)
-
Step 200
200
#C1DBFF
oklch(88.4% 0.057 256.6)
-
Step 300
300
#97C3FF
oklch(80.8% 0.098 256.3)
-
Step 400
400 (this color)
#4C99FC
oklch(68.1% 0.165 255.9)
-
Step 500
500
#1C86FF
oklch(63% 0.201 256)
-
Step 600
600
#0070DE
oklch(55.7% 0.188 255.7)
-
Step 700
700
#005DBC
oklch(49% 0.167 256)
-
Step 800
800
#004C9C
oklch(42.7% 0.146 256)
-
Step 900
900
#003F83
oklch(37.6% 0.128 255.9)
-
Step 950
950
#022550
oklch(27% 0.088 256)
#4C99FC 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 | 0.038 |
| Deuteranopia (no green cones) | #4F90FA | 0.023 |
| Tritanopia (no blue cones) | #00B0BE | 0.130 |
| Achromatopsia (no color) | #989898 | 0.165 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4C99FC
#4C99FC
oklch(68.1% 0.165 255.9)
- #CA8A00
#CA8A00
oklch(68.1% 0.143 76)
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 #4C99FC, 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 0.072
- Lavender Blue #8B88F8 ΔE 0.075
- Perrywinkle #8F8CE7 ΔE 0.079
Use #4C99FC 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.