#4BB2E3
Closest named color: Deep Sky Blue (#00BFFF). oklch(72.4% 0.118 232.4), rgb(75, 178, 227).
Aa
Black text reads best on this color (8.77:1).
About this color
#4BB2E3 is a medium-light, moderately saturated blue. In OKLCH its lightness is 72%, its chroma 0.118 and its hue 232°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sky Blue (#00BFFF), ΔE 0.048 away. Black text reads best on it, at 8.77:1.
| Hue family | Blues |
| Lightness | medium-light (72%) |
| Chroma | moderately saturated (0.118) |
| Temperature | cool |
| Nearest name | Deep Sky Blue (#00BFFF) |
| Black text | 8.77:1 |
| White text | 2.39:1 |
Values
| HEX | #4BB2E3 |
| RGB | rgb(75, 178, 227) |
| HSL | hsl(199, 73%, 59%) |
| OKLCH | oklch(72.4% 0.118 232.4) |
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 #4BB2E3 | 2.39:1 | Fails | Lc -51.8 | Large or bold text, headings |
| Black text on #4BB2E3 | 8.77:1 | AAA | Lc 57.1 | Large or bold text, headings |
| #4BB2E3 text on white | 2.39:1 | Fails | Lc 46.9 | Large or bold text, headings |
| #4BB2E3 text on black | 8.77:1 | AAA | Lc -55.2 | 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
#EFF7FB
oklch(97.1% 0.01 228.9)
-
Step 100
100
#DDEDF6
oklch(93.7% 0.021 232.1)
-
Step 200
200
#BFDFF0
oklch(88.6% 0.041 231)
-
Step 300
300
#90CAE9
oklch(81% 0.074 232.2)
-
Step 400
400 (this color)
#4BB2E3
oklch(72.4% 0.118 232.4)
-
Step 500
500
#0095CA
oklch(63% 0.13 232.7)
-
Step 600
600
#007EAA
oklch(55.7% 0.113 231.8)
-
Step 700
700
#006990
oklch(49% 0.101 232.9)
-
Step 800
800
#005677
oklch(42.6% 0.088 233.1)
-
Step 900
900
#004863
oklch(37.7% 0.077 231.8)
-
Step 950
950
#002B3D
oklch(27.1% 0.055 231.9)
#4BB2E3 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) | #9AB0E5 | 0.078 |
| Deuteranopia (no green cones) | #85A1E2 | 0.066 |
| Tritanopia (no blue cones) | #00BFC2 | 0.075 |
| Achromatopsia (no color) | #A7A7A7 | 0.118 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4BB2E3
#4BB2E3
oklch(72.4% 0.118 232.4)
- #E0905D
#E0905D
oklch(72.5% 0.118 52.4)
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 #4BB2E3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sky Blue #00BFFF ΔE 0.048
- Turquoise Blue #06B1C4 ΔE 0.056
- Vivid Sky Blue #4CC9F0 ΔE 0.063
- Bright Sky Blue #02CCFE ΔE 0.071
- Greyblue #77A1B5 ΔE 0.074
- Carolina Blue #8AB8FE ΔE 0.075
- Lightblue #7BC8F6 ΔE 0.079
- Bluegrey #85A3B2 ΔE 0.082
Use #4BB2E3 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.