#99DDE6
Closest named color: Celeste (#A8DADC). oklch(85.5% 0.069 206.3), rgb(153, 221, 230).
Aa
Black text reads best on this color (13.83:1).
About this color
#99DDE6 is a light, muted teal or cyan. In OKLCH its lightness is 86%, its chroma 0.069 and its hue 206°. Its hue sits on the cool side of the wheel. The nearest named color is Celeste (#A8DADC), ΔE 0.019 away. Black text reads best on it, at 13.83:1.
| Hue family | Teals and cyans |
| Lightness | light (86%) |
| Chroma | muted (0.069) |
| Temperature | cool |
| Nearest name | Celeste (#A8DADC) |
| Black text | 13.83:1 |
| White text | 1.51:1 |
Values
| HEX | #99DDE6 |
| RGB | rgb(153, 221, 230) |
| HSL | hsl(187, 61%, 75%) |
| OKLCH | oklch(85.5% 0.069 206.3) |
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 #99DDE6 | 1.51:1 | Fails | Lc -27.2 | Dividers and decoration only |
| Black text on #99DDE6 | 13.83:1 | AAA | Lc 79.7 | Fine for body text |
| #99DDE6 text on white | 1.51:1 | Fails | Lc 24.0 | Dividers and decoration only |
| #99DDE6 text on black | 13.83:1 | AAA | Lc -79.2 | 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
#EDF8F9
oklch(97.1% 0.012 203.5)
-
Step 100
100
#D7EFF2
oklch(93.5% 0.026 205.8)
-
Step 200
200 (this color)
#99DDE6
oklch(85.5% 0.069 206.3)
-
Step 300
300
#76D1DD
oklch(80.8% 0.089 206.6)
-
Step 400
400
#00B5C6
oklch(70.6% 0.121 206.7)
-
Step 500
500
#009BAA
oklch(63% 0.108 206.9)
-
Step 600
600
#00838F
oklch(55.7% 0.095 206.1)
-
Step 700
700
#006E78
oklch(49.1% 0.084 205.8)
-
Step 800
800
#005A63
oklch(42.7% 0.073 206.6)
-
Step 900
900
#004B53
oklch(37.7% 0.065 207)
-
Step 950
950
#002D32
oklch(27.1% 0.046 206.3)
#99DDE6 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) | #D2D8E7 | 0.068 |
| Deuteranopia (no green cones) | #C5CDE6 | 0.063 |
| Tritanopia (no blue cones) | #7CE3E0 | 0.033 |
| Achromatopsia (no color) | #D2D2D2 | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #99DDE6
#99DDE6
oklch(85.5% 0.069 206.3)
- #FABFB8
#FABFB8
oklch(85.6% 0.069 26.3)
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 #99DDE6, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Celeste #A8DADC ΔE 0.019
- Light Blue #ADD8E6 ΔE 0.024
- Powder Blue #B0E0E6 ΔE 0.027
- Robin's Egg Blue #98EFF9 ΔE 0.048
- Sky Blue #87CEEB ΔE 0.050
- Robin's Egg #6DEDFD ΔE 0.052
- Robin Egg Blue #8AF1FE ΔE 0.053
- Pale Turquoise #AFEEEE ΔE 0.053
Use #99DDE6 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.