#C4FDF9
Closest named color: Eggshell Blue (#C4FFF7). oklch(95.4% 0.058 190.9), rgb(196, 253, 249).
Aa
Black text reads best on this color (18.76:1).
About this color
#C4FDF9 is a very light, muted teal or cyan. In OKLCH its lightness is 95%, its chroma 0.058 and its hue 191°. Its hue sits on the cool side of the wheel. The nearest named color is Eggshell Blue (#C4FFF7), ΔE 0.007 away. Black text reads best on it, at 18.76:1.
| Hue family | Teals and cyans |
| Lightness | very light (95%) |
| Chroma | muted (0.058) |
| Temperature | cool |
| Nearest name | Eggshell Blue (#C4FFF7) |
| Black text | 18.76:1 |
| White text | 1.11:1 |
Values
| HEX | #C4FDF9 |
| RGB | rgb(196, 253, 249) |
| HSL | hsl(176, 93%, 88%) |
| OKLCH | oklch(95.4% 0.058 190.9) |
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 #C4FDF9 | 1.11:1 | Fails | Lc 0.0 | Not readable |
| Black text on #C4FDF9 | 18.76:1 | AAA | Lc 98.4 | Preferred for body text |
| #C4FDF9 text on white | 1.11:1 | Fails | Lc 0.0 | Not readable |
| #C4FDF9 text on black | 18.76:1 | AAA | Lc -99.4 | Preferred 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 50.
-
Step 50
50 (this color)
#C4FDF9
oklch(95.4% 0.058 190.9)
-
Step 100
100
#DBEFED
oklch(93.7% 0.021 189.6)
-
Step 200
200
#BBE2DF
oklch(88.4% 0.041 190.7)
-
Step 300
300
#86D0CC
oklch(80.8% 0.074 191.4)
-
Step 400
400
#18B8B2
oklch(70.8% 0.119 190.6)
-
Step 500
500
#009E99
oklch(63.1% 0.109 190.8)
-
Step 600
600
#008581
oklch(55.7% 0.096 191.1)
-
Step 700
700
#00706C
oklch(49.2% 0.085 190.4)
-
Step 800
800
#005B58
oklch(42.5% 0.073 190.9)
-
Step 900
900
#004C4A
oklch(37.6% 0.065 191.7)
-
Step 950
950
#002D2C
oklch(26.9% 0.046 192.5)
#C4FDF9 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) | #F6F7F9 | 0.061 |
| Deuteranopia (no green cones) | #EBEFFA | 0.057 |
| Tritanopia (no blue cones) | #B3FFFC | 0.018 |
| Achromatopsia (no color) | #F2F2F2 | 0.058 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C4FDF9
#C4FDF9
oklch(95.4% 0.058 190.9)
- #FFEAEC
#FFEAEC
oklch(95.4% 0.023 11)
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 #C4FDF9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Eggshell Blue #C4FFF7 ΔE 0.007
- Duck Egg Blue #C3FBF4 ΔE 0.007
- Light Light Blue #CAFFFB ΔE 0.009
- Pale Cyan #B7FFFA ΔE 0.014
- Pale Blue #D0FEFE ΔE 0.016
- Really Light Blue #D4FFFF ΔE 0.021
- Ice #D6FFFA ΔE 0.022
- Very Light Blue #D5FFFF ΔE 0.023
Use #C4FDF9 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.