#99D3EE
Closest named color: Sky Blue (#87CEEB). oklch(83.6% 0.07 228.5), rgb(153, 211, 238).
Aa
Black text reads best on this color (12.90:1).
About this color
#99D3EE is a light, moderately saturated teal or cyan. In OKLCH its lightness is 84%, its chroma 0.070 and its hue 228°. Its hue sits on the cool side of the wheel. The nearest named color is Sky Blue (#87CEEB), ΔE 0.025 away. Black text reads best on it, at 12.90:1.
| Hue family | Teals and cyans |
| Lightness | light (84%) |
| Chroma | moderately saturated (0.070) |
| Temperature | cool |
| Nearest name | Sky Blue (#87CEEB) |
| Black text | 12.90:1 |
| White text | 1.62:1 |
Values
| HEX | #99D3EE |
| RGB | rgb(153, 211, 238) |
| HSL | hsl(199, 71%, 77%) |
| OKLCH | oklch(83.6% 0.07 228.5) |
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 #99D3EE | 1.62:1 | Fails | Lc -31.5 | Non-text elements, placeholder text |
| Black text on #99D3EE | 12.90:1 | AAA | Lc 75.9 | Fine for body text |
| #99D3EE text on white | 1.62:1 | Fails | Lc 27.9 | Dividers and decoration only |
| #99D3EE text on black | 12.90:1 | AAA | Lc -75.0 | Content text, not long reading |
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 300.
-
Step 50
50
#EFF7FB
oklch(97.1% 0.01 228.9)
-
Step 100
100
#DDEDF5
oklch(93.7% 0.02 229)
-
Step 200
200
#BFDFEE
oklch(88.5% 0.04 227.8)
-
Step 300
300 (this color)
#99D3EE
oklch(83.6% 0.07 228.5)
-
Step 400
400
#45AED8
oklch(70.7% 0.113 228.2)
-
Step 500
500
#0097C4
oklch(63.2% 0.123 228.1)
-
Step 600
600
#007FA5
oklch(55.7% 0.108 227.8)
-
Step 700
700
#006A8C
oklch(49% 0.097 229.1)
-
Step 800
800
#005773
oklch(42.7% 0.084 228.5)
-
Step 900
900
#004860
oklch(37.5% 0.074 228.7)
-
Step 950
950
#002B3B
oklch(27% 0.053 228.8)
#99D3EE 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) | #C5D0EF | 0.052 |
| Deuteranopia (no green cones) | #B9C6EE | 0.048 |
| Tritanopia (no blue cones) | #7BDBDB | 0.050 |
| Achromatopsia (no color) | #CBCBCB | 0.071 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #99D3EE
#99D3EE
oklch(83.6% 0.07 228.5)
- #F0BCA2
#F0BCA2
oklch(83.5% 0.07 47.9)
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 #99D3EE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sky Blue #87CEEB ΔE 0.025
- Baby Blue #A2CFFE ΔE 0.030
- Light Blue #ADD8E6 ΔE 0.031
- Light Sky Blue #87CEFA ΔE 0.031
- Celeste #A8DADC ΔE 0.040
- Light Blue Grey #B7C9E2 ΔE 0.040
- Light Steel Blue #B0C4DE ΔE 0.044
- Sky #82CAFC ΔE 0.044
Use #99D3EE 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.