#C5EFFB
Closest named color: Diamond (#B9F2FF). oklch(92.6% 0.046 217), rgb(197, 239, 251).
Aa
Black text reads best on this color (17.11:1).
About this color
#C5EFFB is a very light, muted teal or cyan. In OKLCH its lightness is 93%, its chroma 0.046 and its hue 217°. Its hue sits on the cool side of the wheel. The nearest named color is Diamond (#B9F2FF), ΔE 0.014 away. Black text reads best on it, at 17.11:1.
| Hue family | Teals and cyans |
| Lightness | very light (93%) |
| Chroma | muted (0.046) |
| Temperature | cool |
| Nearest name | Diamond (#B9F2FF) |
| Black text | 17.11:1 |
| White text | 1.22:1 |
Values
| HEX | #C5EFFB |
| RGB | rgb(197, 239, 251) |
| HSL | hsl(193, 87%, 88%) |
| OKLCH | oklch(92.6% 0.046 217) |
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 #C5EFFB | 1.22:1 | Fails | Lc -13.0 | Not readable |
| Black text on #C5EFFB | 17.11:1 | AAA | Lc 92.4 | Preferred for body text |
| #C5EFFB text on white | 1.22:1 | Fails | Lc 11.2 | Not readable |
| #C5EFFB text on black | 17.11:1 | AAA | Lc -92.9 | 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
#F0F7F9
oklch(97.1% 0.008 216.6)
-
Step 100
100 (this color)
#C5EFFB
oklch(92.6% 0.046 217)
-
Step 200
200
#C2DFE7
oklch(88.5% 0.033 216.2)
-
Step 300
300
#95CBDA
oklch(81% 0.06 216.8)
-
Step 400
400
#50AFC7
oklch(70.6% 0.095 216.9)
-
Step 500
500
#0099B6
oklch(63% 0.113 217.6)
-
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
#004A59
oklch(37.7% 0.067 217.2)
-
Step 950
950
#002C36
oklch(27% 0.048 217.4)
#C5EFFB 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) | #E7ECFC | 0.042 |
| Deuteranopia (no green cones) | #DEE5FB | 0.038 |
| Tritanopia (no blue cones) | #B5F4F3 | 0.027 |
| Achromatopsia (no color) | #E8E8E8 | 0.047 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C5EFFB
#C5EFFB
oklch(92.6% 0.046 217)
- #FFDED5
#FFDED5
oklch(92.6% 0.039 35.7)
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 #C5EFFB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Diamond #B9F2FF ΔE 0.014
- Pale Sky Blue #BDF6FE ΔE 0.019
- Pale Turquoise #AFEEEE ΔE 0.032
- Duck Egg Blue #C3FBF4 ΔE 0.036
- Pale Blue #D0FEFE ΔE 0.042
- Light Light Blue #CAFFFB ΔE 0.044
- Pale Cyan #B7FFFA ΔE 0.044
- Eggshell Blue #C4FFF7 ΔE 0.045
Use #C5EFFB 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.