#CDEFF9
Closest named color: Diamond (#B9F2FF). oklch(93.1% 0.038 217.4), rgb(205, 239, 249).
Aa
Black text reads best on this color (17.31:1).
About this color
#CDEFF9 is a very light, muted teal or cyan. In OKLCH its lightness is 93%, its chroma 0.038 and its hue 217°. Its hue sits on the cool side of the wheel. The nearest named color is Diamond (#B9F2FF), ΔE 0.023 away. Black text reads best on it, at 17.31:1.
| Hue family | Teals and cyans |
| Lightness | very light (93%) |
| Chroma | muted (0.038) |
| Temperature | cool |
| Nearest name | Diamond (#B9F2FF) |
| Black text | 17.31:1 |
| White text | 1.21:1 |
Values
| HEX | #CDEFF9 |
| RGB | rgb(205, 239, 249) |
| HSL | hsl(194, 79%, 89%) |
| OKLCH | oklch(93.1% 0.038 217.4) |
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 #CDEFF9 | 1.21:1 | Fails | Lc -12.2 | Not readable |
| Black text on #CDEFF9 | 17.31:1 | AAA | Lc 93.1 | Preferred for body text |
| #CDEFF9 text on white | 1.21:1 | Fails | Lc 10.5 | Not readable |
| #CDEFF9 text on black | 17.31:1 | AAA | Lc -93.6 | 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 100.
-
Step 50
50
#F1F7F8
oklch(97.2% 0.007 208.8)
-
Step 100
100 (this color)
#CDEFF9
oklch(93.1% 0.038 217.4)
-
Step 200
200
#C6DEE5
oklch(88.5% 0.027 217.2)
-
Step 300
300
#9EC9D5
oklch(80.9% 0.048 216.7)
-
Step 400
400
#64ADC1
oklch(70.7% 0.078 217.5)
-
Step 500
500
#2E98B1
oklch(63.1% 0.1 217.2)
-
Step 600
600
#008199
oklch(55.6% 0.099 216.9)
-
Step 700
700
#006C81
oklch(49% 0.088 217.4)
-
Step 800
800
#00596A
oklch(42.8% 0.076 216.6)
-
Step 900
900
#064A58
oklch(37.8% 0.065 216.6)
-
Step 950
950
#092B34
oklch(27% 0.041 219)
#CDEFF9 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) | #E8ECFA | 0.034 |
| Deuteranopia (no green cones) | #E1E7F9 | 0.031 |
| Tritanopia (no blue cones) | #C1F3F2 | 0.022 |
| Achromatopsia (no color) | #E9E9E9 | 0.038 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #CDEFF9
#CDEFF9
oklch(93.1% 0.038 217.4)
- #FFE0D7
#FFE0D7
oklch(93% 0.037 36.8)
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 #CDEFF9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Diamond #B9F2FF ΔE 0.023
- Pale Sky Blue #BDF6FE ΔE 0.023
- Duck Egg Blue #C3FBF4 ΔE 0.036
- Lavender #E6E6FA ΔE 0.038
- Pale Blue #D0FEFE ΔE 0.039
- Pale Turquoise #AFEEEE ΔE 0.039
- Light Light Blue #CAFFFB ΔE 0.041
- Anti-Flash White #EDF2F4 ΔE 0.042
Use #CDEFF9 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.