#4B99EF
Closest named color: Chefchaouen Blue (#4895EF). oklch(67.3% 0.149 252.8), rgb(75, 153, 239).
Aa
Black text reads best on this color (7.10:1).
About this color
#4B99EF is a medium-light, vivid blue. In OKLCH its lightness is 67%, its chroma 0.149 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Chefchaouen Blue (#4895EF), ΔE 0.012 away. Black text reads best on it, at 7.10:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.149) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 7.10:1 |
| White text | 2.95:1 |
Values
| HEX | #4B99EF |
| RGB | rgb(75, 153, 239) |
| HSL | hsl(211, 84%, 62%) |
| OKLCH | oklch(67.3% 0.149 252.8) |
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 #4B99EF | 2.95:1 | Fails | Lc -61.1 | Content text, not long reading |
| Black text on #4B99EF | 7.10:1 | AAA | Lc 48.3 | Large or bold text, headings |
| #4B99EF text on white | 2.95:1 | Fails | Lc 55.8 | Large or bold text, headings |
| #4B99EF text on black | 7.10:1 | AAA | Lc -46.0 | 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
#F0F6FE
oklch(97.1% 0.012 255.5)
-
Step 100
100
#DEEBFC
oklch(93.5% 0.027 255.1)
-
Step 200
200
#C2DCFB
oklch(88.5% 0.051 252.9)
-
Step 300
300
#95C5FC
oklch(81% 0.093 252.3)
-
Step 400
400 (this color)
#4B99EF
oklch(67.3% 0.149 252.8)
-
Step 500
500
#0989F8
oklch(63% 0.191 253)
-
Step 600
600
#0073D3
oklch(55.6% 0.171 252.9)
-
Step 700
700
#0061B3
oklch(49.2% 0.151 252.8)
-
Step 800
800
#004F94
oklch(42.8% 0.131 252.8)
-
Step 900
900
#00417C
oklch(37.6% 0.116 253)
-
Step 950
950
#02274B
oklch(27.1% 0.078 252)
#4B99EF 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) | #729EF3 | 0.042 |
| Deuteranopia (no green cones) | #5A8FED | 0.027 |
| Tritanopia (no blue cones) | #00ADB9 | 0.115 |
| Achromatopsia (no color) | #969696 | 0.149 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B99EF
#4B99EF
oklch(67.3% 0.149 252.8)
- #CB8600
#CB8600
oklch(67.4% 0.144 73)
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 #4B99EF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.012
- Cornflower Blue #6495ED ΔE 0.023
- Dark Sky Blue #448EE4 ΔE 0.033
- Dodger Blue #1E90FF ΔE 0.046
- Soft Blue #6488EA ΔE 0.046
- Periwinkle Blue #8F99FB ΔE 0.077
- Perrywinkle #8F8CE7 ΔE 0.077
- Faded Blue #658CBB ΔE 0.079
Use #4B99EF 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.