#2BBBFF
Closest named color: Deep Sky Blue (#00BFFF). oklch(75% 0.15 235.6), rgb(43, 187, 255).
Aa
Black text reads best on this color (9.65:1).
About this color
#2BBBFF is a medium-light, vivid blue. In OKLCH its lightness is 75%, its chroma 0.150 and its hue 236°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sky Blue (#00BFFF), ΔE 0.012 away. Black text reads best on it, at 9.65:1.
| Hue family | Blues |
| Lightness | medium-light (75%) |
| Chroma | vivid (0.150) |
| Temperature | cool |
| Nearest name | Deep Sky Blue (#00BFFF) |
| Black text | 9.65:1 |
| White text | 2.17:1 |
Values
| HEX | #2BBBFF |
| RGB | rgb(43, 187, 255) |
| HSL | hsl(199, 100%, 58%) |
| OKLCH | oklch(75% 0.15 235.6) |
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 #2BBBFF | 2.17:1 | Fails | Lc -47.0 | Large or bold text, headings |
| Black text on #2BBBFF | 9.65:1 | AAA | Lc 61.7 | Content text, not long reading |
| #2BBBFF text on white | 2.17:1 | Fails | Lc 42.3 | Non-text elements, placeholder text |
| #2BBBFF text on black | 9.65:1 | AAA | Lc -60.0 | 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
#EEF7FD
oklch(97.1% 0.013 236.6)
-
Step 100
100
#D9EDFA
oklch(93.5% 0.028 236.2)
-
Step 200
200
#B9DFF7
oklch(88.4% 0.052 235.9)
-
Step 300
300
#83CBF5
oklch(81% 0.093 235.2)
-
Step 400
400 (this color)
#2BBBFF
oklch(75% 0.15 235.6)
-
Step 500
500
#0094CF
oklch(63% 0.135 235.8)
-
Step 600
600
#007DAF
oklch(55.7% 0.119 235.4)
-
Step 700
700
#006994
oklch(49.2% 0.105 235.5)
-
Step 800
800
#00567A
oklch(42.8% 0.091 235.4)
-
Step 900
900
#004766
oklch(37.6% 0.081 235.8)
-
Step 950
950
#002A3F
oklch(27% 0.059 236.5)
#2BBBFF 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) | #9ABAFF | 0.088 |
| Deuteranopia (no green cones) | #7EA7FE | 0.073 |
| Tritanopia (no blue cones) | #00CDD2 | 0.095 |
| Achromatopsia (no color) | #B0B0B0 | 0.150 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2BBBFF
#2BBBFF
oklch(75% 0.15 235.6)
- #F59244
#F59244
oklch(75.1% 0.15 55.8)
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 #2BBBFF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sky Blue #00BFFF ΔE 0.012
- Bright Sky Blue #02CCFE ΔE 0.047
- Vivid Sky Blue #4CC9F0 ΔE 0.053
- Carolina Blue #8AB8FE ΔE 0.070
- Lightblue #7BC8F6 ΔE 0.071
- Sky #82CAFC ΔE 0.078
- Turquoise Blue #06B1C4 ΔE 0.088
- Light Sky Blue #87CEFA ΔE 0.090
Use #2BBBFF 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.