#0BB9FB
Closest named color: Deep Sky Blue (#00BFFF). oklch(74% 0.152 233.5), rgb(11, 185, 251).
Aa
Black text reads best on this color (9.34:1).
About this color
#0BB9FB is a medium-light, vivid blue. In OKLCH its lightness is 74%, its chroma 0.152 and its hue 234°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sky Blue (#00BFFF), ΔE 0.016 away. Black text reads best on it, at 9.34:1.
| Hue family | Blues |
| Lightness | medium-light (74%) |
| Chroma | vivid (0.152) |
| Temperature | cool |
| Nearest name | Deep Sky Blue (#00BFFF) |
| Black text | 9.34:1 |
| White text | 2.24:1 |
Values
| HEX | #0BB9FB |
| RGB | rgb(11, 185, 251) |
| HSL | hsl(196, 97%, 51%) |
| OKLCH | oklch(74% 0.152 233.5) |
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 #0BB9FB | 2.24:1 | Fails | Lc -48.4 | Large or bold text, headings |
| Black text on #0BB9FB | 9.34:1 | AAA | Lc 60.3 | Content text, not long reading |
| #0BB9FB text on white | 2.24:1 | Fails | Lc 43.6 | Non-text elements, placeholder text |
| #0BB9FB text on black | 9.34:1 | AAA | Lc -58.5 | 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
#B8E0F7
oklch(88.6% 0.053 233.4)
-
Step 300
300
#80CBF5
oklch(80.9% 0.095 234.2)
-
Step 400
400 (this color)
#0BB9FB
oklch(74% 0.152 233.5)
-
Step 500
500
#0095CC
oklch(63.1% 0.132 233.7)
-
Step 600
600
#007DAC
oklch(55.5% 0.116 233.8)
-
Step 700
700
#006991
oklch(49% 0.102 233.6)
-
Step 800
800
#005678
oklch(42.7% 0.089 233.9)
-
Step 900
900
#004864
oklch(37.8% 0.078 232.8)
-
Step 950
950
#002A3D
oklch(26.9% 0.056 233.8)
#0BB9FB 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) | #98B8FE | 0.095 |
| Deuteranopia (no green cones) | #7BA4FA | 0.079 |
| Tritanopia (no blue cones) | #00CAD0 | 0.090 |
| Achromatopsia (no color) | #ADADAD | 0.153 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0BB9FB
#0BB9FB
oklch(74% 0.152 233.5)
- #F48D42
#F48D42
oklch(74.1% 0.153 53.6)
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 #0BB9FB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sky Blue #00BFFF ΔE 0.016
- Bright Sky Blue #02CCFE ΔE 0.052
- Vivid Sky Blue #4CC9F0 ΔE 0.059
- Carolina Blue #8AB8FE ΔE 0.079
- Lightblue #7BC8F6 ΔE 0.080
- Turquoise Blue #06B1C4 ΔE 0.081
- Sky #82CAFC ΔE 0.088
- Chefchaouen Blue #4895EF ΔE 0.094
Use #0BB9FB 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.