#99F9FB
Closest named color: Robin's Egg Blue (#98EFF9). oklch(92.4% 0.091 197.4), rgb(153, 249, 251).
Aa
Black text reads best on this color (17.29:1).
About this color
#99F9FB is a very light, moderately saturated teal or cyan. In OKLCH its lightness is 92%, its chroma 0.091 and its hue 197°. Its hue sits on the cool side of the wheel. The nearest named color is Robin's Egg Blue (#98EFF9), ΔE 0.027 away. Black text reads best on it, at 17.29:1.
| Hue family | Teals and cyans |
| Lightness | very light (92%) |
| Chroma | moderately saturated (0.091) |
| Temperature | cool |
| Nearest name | Robin's Egg Blue (#98EFF9) |
| Black text | 17.29:1 |
| White text | 1.21:1 |
Values
| HEX | #99F9FB |
| RGB | rgb(153, 249, 251) |
| HSL | hsl(181, 92%, 79%) |
| OKLCH | oklch(92.4% 0.091 197.4) |
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 #99F9FB | 1.21:1 | Fails | Lc -12.1 | Not readable |
| Black text on #99F9FB | 17.29:1 | AAA | Lc 93.2 | Preferred for body text |
| #99F9FB text on white | 1.21:1 | Fails | Lc 10.4 | Not readable |
| #99F9FB text on black | 17.29:1 | AAA | Lc -93.7 | Preferred for body text |
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 100.
-
Step 50
50
#EAF9F9
oklch(97.1% 0.016 196.9)
-
Step 100
100 (this color)
#99F9FB
oklch(92.4% 0.091 197.4)
-
Step 200
200
#A6E7E8
oklch(88.5% 0.065 197.2)
-
Step 300
300
#4DD8DB
oklch(81% 0.117 197.1)
-
Step 400
400
#00B7BB
oklch(70.7% 0.12 197.6)
-
Step 500
500
#009DA0
oklch(63.1% 0.107 197.2)
-
Step 600
600
#008487
oklch(55.6% 0.095 197.6)
-
Step 700
700
#006F71
oklch(49.1% 0.084 197)
-
Step 800
800
#005B5D
oklch(42.7% 0.073 197.4)
-
Step 900
900
#004C4D
oklch(37.8% 0.064 196.3)
-
Step 950
950
#002D2E
oklch(27% 0.046 197.1)
#99F9FB 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) | #EDF1FB | 0.094 |
| Deuteranopia (no green cones) | #DCE4FC | 0.088 |
| Tritanopia (no blue cones) | #6EFFF9 | 0.036 |
| Achromatopsia (no color) | #E9E9E9 | 0.092 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #99F9FB
#99F9FB
oklch(92.4% 0.091 197.4)
- #FFDCDC
#FFDCDC
oklch(92.4% 0.039 17.9)
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 #99F9FB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Robin's Egg Blue #98EFF9 ΔE 0.027
- Robin Egg Blue #8AF1FE ΔE 0.028
- Pale Turquoise #AFEEEE ΔE 0.032
- Pale Cyan #B7FFFA ΔE 0.035
- Diamond #B9F2FF ΔE 0.037
- Pale Sky Blue #BDF6FE ΔE 0.037
- Pale Aqua #B8FFEB ΔE 0.043
- Duck Egg Blue #C3FBF4 ΔE 0.044
Use #99F9FB 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.