#4B9CFF
Closest named color: Chefchaouen Blue (#4895EF). oklch(68.9% 0.166 255), rgb(75, 156, 255).
Aa
Black text reads best on this color (7.49:1).
About this color
#4B9CFF is a medium-light, vivid blue. In OKLCH its lightness is 69%, its chroma 0.166 and its hue 255°. 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 7.49:1.
| Hue family | Blues |
| Lightness | medium-light (69%) |
| Chroma | vivid (0.166) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 7.49:1 |
| White text | 2.80:1 |
Values
| HEX | #4B9CFF |
| RGB | rgb(75, 156, 255) |
| HSL | hsl(213, 100%, 65%) |
| OKLCH | oklch(68.9% 0.166 255) |
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 #4B9CFF | 2.80:1 | Fails | Lc -58.8 | Large or bold text, headings |
| Black text on #4B9CFF | 7.49:1 | AAA | Lc 50.5 | Large or bold text, headings |
| #4B9CFF text on white | 2.80:1 | Fails | Lc 53.5 | Large or bold text, headings |
| #4B9CFF text on black | 7.49:1 | AAA | Lc -48.3 | 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
#C0DCFF
oklch(88.5% 0.057 254.1)
-
Step 300
300
#96C4FF
oklch(81% 0.097 254.9)
-
Step 400
400 (this color)
#4B9CFF
oklch(68.9% 0.166 255)
-
Step 500
500
#1087FF
oklch(63.1% 0.202 255)
-
Step 600
600
#0071DB
oklch(55.7% 0.183 255)
-
Step 700
700
#005EB9
oklch(49% 0.162 255.1)
-
Step 800
800
#004D99
oklch(42.7% 0.14 255)
-
Step 900
900
#004081
oklch(37.7% 0.124 254.9)
-
Step 950
950
#012550
oklch(26.9% 0.089 255.6)
#4B9CFF 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) | #6EA3FF | 0.039 |
| Deuteranopia (no green cones) | #5293FD | 0.023 |
| Tritanopia (no blue cones) | #00B3C1 | 0.129 |
| Achromatopsia (no color) | #9A9A9A | 0.166 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B9CFF
#4B9CFF
oklch(68.9% 0.166 255)
- #CF8C00
#CF8C00
oklch(69% 0.146 75.1)
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 #4B9CFF, 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 0.033
- Dodger Blue #1E90FF ΔE 0.044
- Dark Sky Blue #448EE4 ΔE 0.052
- Soft Blue #6488EA ΔE 0.056
- Periwinkle Blue #8F99FB ΔE 0.071
- Lavender Blue #8B88F8 ΔE 0.078
- Perrywinkle #8F8CE7 ΔE 0.082
Use #4B9CFF 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.