#99E8FF
Closest named color: Robin's Egg Blue (#98EFF9). oklch(88.8% 0.083 218.2), rgb(153, 232, 255).
Aa
Black text reads best on this color (15.34:1).
About this color
#99E8FF is a light, moderately saturated teal or cyan. In OKLCH its lightness is 89%, its chroma 0.083 and its hue 218°. Its hue sits on the cool side of the wheel. The nearest named color is Robin's Egg Blue (#98EFF9), ΔE 0.023 away. Black text reads best on it, at 15.34:1.
| Hue family | Teals and cyans |
| Lightness | light (89%) |
| Chroma | moderately saturated (0.083) |
| Temperature | cool |
| Nearest name | Robin's Egg Blue (#98EFF9) |
| Black text | 15.34:1 |
| White text | 1.36:1 |
Values
| HEX | #99E8FF |
| RGB | rgb(153, 232, 255) |
| HSL | hsl(194, 100%, 80%) |
| OKLCH | oklch(88.8% 0.083 218.2) |
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 #99E8FF | 1.36:1 | Fails | Lc -20.5 | Dividers and decoration only |
| Black text on #99E8FF | 15.34:1 | AAA | Lc 85.7 | Fine for body text |
| #99E8FF text on white | 1.36:1 | Fails | Lc 17.9 | Dividers and decoration only |
| #99E8FF text on black | 15.34:1 | AAA | Lc -85.6 | 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
#EBF8FC
oklch(97.1% 0.015 218)
-
Step 100
100
#D4EFF8
oklch(93.5% 0.031 219.8)
-
Step 200
200 (this color)
#99E8FF
oklch(88.8% 0.083 218.2)
-
Step 300
300
#65D1EF
oklch(80.8% 0.107 218.6)
-
Step 400
400
#00B3D5
oklch(70.8% 0.127 217.9)
-
Step 500
500
#0099B7
oklch(63.1% 0.114 218.3)
-
Step 600
600
#00819A
oklch(55.7% 0.1 217.7)
-
Step 700
700
#006C82
oklch(49.1% 0.088 218.4)
-
Step 800
800
#00596B
oklch(42.8% 0.077 217.7)
-
Step 900
900
#004A59
oklch(37.7% 0.067 217.2)
-
Step 950
950
#002C36
oklch(27% 0.048 217.4)
#99E8FF 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) | #D9E3FF | 0.073 |
| Deuteranopia (no green cones) | #C9D7FF | 0.066 |
| Tritanopia (no blue cones) | #6FF0EF | 0.051 |
| Achromatopsia (no color) | #DCDCDC | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #99E8FF
#99E8FF
oklch(88.8% 0.083 218.2)
- #FFCDBD
#FFCDBD
oklch(88.8% 0.061 38.5)
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 #99E8FF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Robin's Egg Blue #98EFF9 ΔE 0.023
- Robin Egg Blue #8AF1FE ΔE 0.027
- Robin's Egg #6DEDFD ΔE 0.038
- Powder Blue #B0E0E6 ΔE 0.038
- Pale Turquoise #AFEEEE ΔE 0.039
- Diamond #B9F2FF ΔE 0.046
- Light Blue #ADD8E6 ΔE 0.047
- Celeste #A8DADC ΔE 0.051
Use #99E8FF 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.