#2BB5ED
Closest named color: Deep Sky Blue (#00BFFF). oklch(72.7% 0.137 231.4), rgb(43, 181, 237).
Aa
Black text reads best on this color (8.93:1).
About this color
#2BB5ED is a medium-light, moderately saturated blue. In OKLCH its lightness is 73%, its chroma 0.137 and its hue 231°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sky Blue (#00BFFF), ΔE 0.032 away. Black text reads best on it, at 8.93:1.
| Hue family | Blues |
| Lightness | medium-light (73%) |
| Chroma | moderately saturated (0.137) |
| Temperature | cool |
| Nearest name | Deep Sky Blue (#00BFFF) |
| Black text | 8.93:1 |
| White text | 2.35:1 |
Values
| HEX | #2BB5ED |
| RGB | rgb(43, 181, 237) |
| HSL | hsl(197, 84%, 55%) |
| OKLCH | oklch(72.7% 0.137 231.4) |
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 #2BB5ED | 2.35:1 | Fails | Lc -50.8 | Large or bold text, headings |
| Black text on #2BB5ED | 8.93:1 | AAA | Lc 58.1 | Large or bold text, headings |
| #2BB5ED text on white | 2.35:1 | Fails | Lc 45.9 | Large or bold text, headings |
| #2BB5ED text on black | 8.93:1 | AAA | Lc -56.2 | 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
#EEF7FC
oklch(97.1% 0.012 231.7)
-
Step 100
100
#DAEDF8
oklch(93.5% 0.025 233)
-
Step 200
200
#BAE0F3
oklch(88.6% 0.048 229.6)
-
Step 300
300
#86CBEE
oklch(80.9% 0.085 231.3)
-
Step 400
400 (this color)
#2BB5ED
oklch(72.7% 0.137 231.4)
-
Step 500
500
#0096C8
oklch(63.1% 0.127 231)
-
Step 600
600
#007EA9
oklch(55.6% 0.112 231.2)
-
Step 700
700
#006A8F
oklch(49.2% 0.1 231.3)
-
Step 800
800
#005776
oklch(42.8% 0.087 231.2)
-
Step 900
900
#004863
oklch(37.7% 0.077 231.8)
-
Step 950
950
#002B3C
oklch(27.1% 0.054 230.4)
#2BB5ED 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) | #99B3F0 | 0.092 |
| Deuteranopia (no green cones) | #7FA1EC | 0.077 |
| Tritanopia (no blue cones) | #00C4C8 | 0.079 |
| Achromatopsia (no color) | #A9A9A9 | 0.137 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2BB5ED
#2BB5ED
oklch(72.7% 0.137 231.4)
- #EA8C50
#EA8C50
oklch(72.8% 0.137 51.6)
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 #2BB5ED, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sky Blue #00BFFF ΔE 0.032
- Vivid Sky Blue #4CC9F0 ΔE 0.061
- Bright Sky Blue #02CCFE ΔE 0.062
- Turquoise Blue #06B1C4 ΔE 0.062
- Carolina Blue #8AB8FE ΔE 0.081
- Lightblue #7BC8F6 ΔE 0.082
- Chefchaouen Blue #4895EF ΔE 0.088
- Cornflower Blue #6495ED ΔE 0.089
Use #2BB5ED 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.