#4D99EB
Closest named color: Chefchaouen Blue (#4895EF). oklch(67.2% 0.144 252.3), rgb(77, 153, 235).
Aa
Black text reads best on this color (7.07:1).
About this color
#4D99EB is a medium-light, vivid blue. In OKLCH its lightness is 67%, its chroma 0.144 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is Chefchaouen Blue (#4895EF), ΔE 0.014 away. Black text reads best on it, at 7.07:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.144) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 7.07:1 |
| White text | 2.96:1 |
Values
| HEX | #4D99EB |
| RGB | rgb(77, 153, 235) |
| HSL | hsl(211, 80%, 61%) |
| OKLCH | oklch(67.2% 0.144 252.3) |
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 #4D99EB | 2.96:1 | Fails | Lc -61.3 | Content text, not long reading |
| Black text on #4D99EB | 7.07:1 | AAA | Lc 48.1 | Large or bold text, headings |
| #4D99EB text on white | 2.96:1 | Fails | Lc 56.0 | Large or bold text, headings |
| #4D99EB text on black | 7.07:1 | AAA | Lc -45.8 | 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
#DEEBFB
oklch(93.5% 0.026 253.6)
-
Step 200
200
#C2DCFA
oklch(88.5% 0.05 252.1)
-
Step 300
300
#97C5FA
oklch(81% 0.09 252.4)
-
Step 400
400 (this color)
#4D99EB
oklch(67.2% 0.144 252.3)
-
Step 500
500
#148AF4
oklch(63.1% 0.184 252.5)
-
Step 600
600
#0074D1
oklch(55.7% 0.167 252.1)
-
Step 700
700
#0061B1
oklch(49.1% 0.148 252.3)
-
Step 800
800
#004F92
oklch(42.6% 0.129 252.3)
-
Step 900
900
#00427B
oklch(37.7% 0.113 252.1)
-
Step 950
950
#04274A
oklch(27.1% 0.076 252.4)
#4D99EB 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) | #759EEE | 0.044 |
| Deuteranopia (no green cones) | #5E8FE9 | 0.028 |
| Tritanopia (no blue cones) | #00ACB7 | 0.111 |
| Achromatopsia (no color) | #969696 | 0.144 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4D99EB
#4D99EB
oklch(67.2% 0.144 252.3)
- #CB8500
#CB8500
oklch(67.2% 0.144 72.3)
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 #4D99EB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.014
- Cornflower Blue #6495ED ΔE 0.023
- Dark Sky Blue #448EE4 ΔE 0.032
- Soft Blue #6488EA ΔE 0.047
- Dodger Blue #1E90FF ΔE 0.051
- Faded Blue #658CBB ΔE 0.073
- Perrywinkle #8F8CE7 ΔE 0.076
- Water Blue #0E87CC ΔE 0.077
Use #4D99EB 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.