#ADD3D4
Closest named color: Celeste (#A8DADC). oklch(84% 0.04 198.4), rgb(173, 211, 212).
Aa
Black text reads best on this color (13.04:1).
About this color
#ADD3D4 is a light, muted teal or cyan. In OKLCH its lightness is 84%, its chroma 0.040 and its hue 198°. Its hue sits on the cool side of the wheel. The nearest named color is Celeste (#A8DADC), ΔE 0.018 away. Black text reads best on it, at 13.04:1.
| Hue family | Teals and cyans |
| Lightness | light (84%) |
| Chroma | muted (0.040) |
| Temperature | cool |
| Nearest name | Celeste (#A8DADC) |
| Black text | 13.04:1 |
| White text | 1.60:1 |
Values
| HEX | #ADD3D4 |
| RGB | rgb(173, 211, 212) |
| HSL | hsl(182, 31%, 75%) |
| OKLCH | oklch(84% 0.04 198.4) |
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 #ADD3D4 | 1.60:1 | Fails | Lc -30.9 | Non-text elements, placeholder text |
| Black text on #ADD3D4 | 13.04:1 | AAA | Lc 76.4 | Fine for body text |
| #ADD3D4 text on white | 1.60:1 | Fails | Lc 27.4 | Dividers and decoration only |
| #ADD3D4 text on black | 13.04:1 | AAA | Lc -75.6 | 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 300.
-
Step 50
50
#F2F7F7
oklch(97.2% 0.005 197.1)
-
Step 100
100
#E1ECED
oklch(93.5% 0.012 203.5)
-
Step 200
200
#C9DEDE
oklch(88.5% 0.022 196.8)
-
Step 300
300 (this color)
#ADD3D4
oklch(84% 0.04 198.4)
-
Step 400
400
#6FADAF
oklch(70.6% 0.064 198.4)
-
Step 500
500
#43999C
oklch(63.2% 0.082 198.4)
-
Step 600
600
#188386
oklch(55.6% 0.089 197.9)
-
Step 700
700
#036F72
oklch(49.2% 0.083 198.1)
-
Step 800
800
#0D5A5D
oklch(42.7% 0.069 199.1)
-
Step 900
900
#174A4C
oklch(37.7% 0.053 198.8)
-
Step 950
950
#0F2B2C
oklch(26.8% 0.034 198.5)
#ADD3D4 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) | #CECFD4 | 0.042 |
| Deuteranopia (no green cones) | #C6C9D4 | 0.039 |
| Tritanopia (no blue cones) | #A1D6D3 | 0.016 |
| Achromatopsia (no color) | #CCCCCC | 0.040 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #ADD3D4
#ADD3D4
oklch(84% 0.04 198.4)
- #E4C1C0
#E4C1C0
oklch(84.1% 0.04 19.9)
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 #ADD3D4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Celeste #A8DADC ΔE 0.018
- Light Blue #ADD8E6 ΔE 0.025
- Powder Blue #B0E0E6 ΔE 0.037
- Light Blue Grey #B7C9E2 ΔE 0.040
- Cadet Gray #CED4DA ΔE 0.044
- Tiffany Blue #94D2BD ΔE 0.046
- Light Steel Blue #B0C4DE ΔE 0.047
- Light Gray #D3D3D3 ΔE 0.048
Use #ADD3D4 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.