#0B99FF
Closest named color: Dodger Blue (#1E90FF). oklch(67% 0.183 249.2), rgb(11, 153, 255).
Aa
Black text reads best on this color (7.01:1).
About this color
#0B99FF is a medium-light, vivid blue. In OKLCH its lightness is 67%, its chroma 0.183 and its hue 249°. Its hue sits on the cool side of the wheel. The nearest named color is Dodger Blue (#1E90FF), ΔE 0.023 away. Black text reads best on it, at 7.01:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.183) |
| Temperature | cool |
| Nearest name | Dodger Blue (#1E90FF) |
| Black text | 7.01:1 |
| White text | 2.99:1 |
Values
| HEX | #0B99FF |
| RGB | rgb(11, 153, 255) |
| HSL | hsl(205, 100%, 52%) |
| OKLCH | oklch(67% 0.183 249.2) |
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 #0B99FF | 2.99:1 | Fails | Lc -61.2 | Content text, not long reading |
| Black text on #0B99FF | 7.01:1 | AAA | Lc 48.2 | Large or bold text, headings |
| #0B99FF text on white | 2.99:1 | Fails | Lc 55.9 | Large or bold text, headings |
| #0B99FF text on black | 7.01:1 | AAA | Lc -45.9 | 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
#EEF7FF
oklch(97.2% 0.014 244.7)
-
Step 100
100
#DAECFF
oklch(93.6% 0.032 249.6)
-
Step 200
200
#BCDDFF
oklch(88.5% 0.059 249.3)
-
Step 300
300
#8DC6FF
oklch(80.9% 0.1 249.2)
-
Step 400
400 (this color)
#0B99FF
oklch(67% 0.183 249.2)
-
Step 500
500
#008DED
oklch(63.1% 0.175 249.1)
-
Step 600
600
#0076C8
oklch(55.5% 0.154 249.2)
-
Step 700
700
#0063A9
oklch(49% 0.136 249.1)
-
Step 800
800
#00518C
oklch(42.7% 0.118 249.2)
-
Step 900
900
#004376
oklch(37.6% 0.105 249.5)
-
Step 950
950
#002849
oklch(27.1% 0.074 248.8)
#0B99FF 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) | #65A0FF | 0.057 |
| Deuteranopia (no green cones) | #3E8CFD | 0.035 |
| Tritanopia (no blue cones) | #00B2C0 | 0.131 |
| Achromatopsia (no color) | #959595 | 0.183 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0B99FF
#0B99FF
oklch(67% 0.183 249.2)
- #CE8200
#CE8200
oklch(67.1% 0.146 69.2)
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 #0B99FF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dodger Blue #1E90FF ΔE 0.023
- Chefchaouen Blue #4895EF ΔE 0.033
- Dark Sky Blue #448EE4 ΔE 0.047
- Cornflower Blue #6495ED ΔE 0.054
- Soft Blue #6488EA ΔE 0.065
- Clear Blue #247AFD ΔE 0.078
- Water Blue #0E87CC ΔE 0.085
- Cornflower #6A79F7 ΔE 0.091
Use #0B99FF 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.