#99E5FF
Closest named color: Robin's Egg Blue (#98EFF9). oklch(88.1% 0.083 221.5), rgb(153, 229, 255).
Aa
Black text reads best on this color (15.00:1).
About this color
#99E5FF is a light, moderately saturated teal or cyan. In OKLCH its lightness is 88%, its chroma 0.083 and its hue 222°. Its hue sits on the cool side of the wheel. The nearest named color is Robin's Egg Blue (#98EFF9), ΔE 0.031 away. Black text reads best on it, at 15.00:1.
| Hue family | Teals and cyans |
| Lightness | light (88%) |
| Chroma | moderately saturated (0.083) |
| Temperature | cool |
| Nearest name | Robin's Egg Blue (#98EFF9) |
| Black text | 15.00:1 |
| White text | 1.39:1 |
Values
| HEX | #99E5FF |
| RGB | rgb(153, 229, 255) |
| HSL | hsl(195, 100%, 80%) |
| OKLCH | oklch(88.1% 0.083 221.5) |
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 #99E5FF | 1.39:1 | Fails | Lc -22.0 | Dividers and decoration only |
| Black text on #99E5FF | 15.00:1 | AAA | Lc 84.4 | Fine for body text |
| #99E5FF text on white | 1.39:1 | Fails | Lc 19.3 | Dividers and decoration only |
| #99E5FF text on black | 15.00:1 | AAA | Lc -84.2 | Fine 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 200.
-
Step 50
50
#ECF8FC
oklch(97.1% 0.014 219.6)
-
Step 100
100
#D5EFF9
oklch(93.6% 0.031 222.9)
-
Step 200
200 (this color)
#99E5FF
oklch(88.1% 0.083 221.5)
-
Step 300
300
#69D0F1
oklch(80.8% 0.106 221.5)
-
Step 400
400
#00B2DA
oklch(70.7% 0.13 221.5)
-
Step 500
500
#0098BB
oklch(63% 0.116 221.8)
-
Step 600
600
#00809E
oklch(55.6% 0.103 221.9)
-
Step 700
700
#006C85
oklch(49.2% 0.09 221.2)
-
Step 800
800
#00586D
oklch(42.6% 0.078 221.3)
-
Step 900
900
#00495C
oklch(37.6% 0.07 222.6)
-
Step 950
950
#002C38
oklch(27.2% 0.05 221.4)
#99E5FF 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) | #D5E1FF | 0.068 |
| Deuteranopia (no green cones) | #C6D5FF | 0.062 |
| Tritanopia (no blue cones) | #70EEED | 0.054 |
| Achromatopsia (no color) | #DADADA | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #99E5FF
#99E5FF
oklch(88.1% 0.083 221.5)
- #FFCAB7
#FFCAB7
oklch(88.1% 0.066 40.6)
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 #99E5FF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Robin's Egg Blue #98EFF9 ΔE 0.031
- Robin Egg Blue #8AF1FE ΔE 0.034
- Powder Blue #B0E0E6 ΔE 0.038
- Robin's Egg #6DEDFD ΔE 0.041
- Light Blue #ADD8E6 ΔE 0.042
- Pale Turquoise #AFEEEE ΔE 0.045
- Celeste #A8DADC ΔE 0.048
- Diamond #B9F2FF ΔE 0.052
Use #99E5FF 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.