#C4F3FB
Closest named color: Pale Sky Blue (#BDF6FE). oklch(93.4% 0.049 209), rgb(196, 243, 251).
Aa
Black text reads best on this color (17.56:1).
About this color
#C4F3FB is a very light, muted teal or cyan. In OKLCH its lightness is 93%, its chroma 0.049 and its hue 209°. Its hue sits on the cool side of the wheel. The nearest named color is Pale Sky Blue (#BDF6FE), ΔE 0.010 away. Black text reads best on it, at 17.56:1.
| Hue family | Teals and cyans |
| Lightness | very light (93%) |
| Chroma | muted (0.049) |
| Temperature | cool |
| Nearest name | Pale Sky Blue (#BDF6FE) |
| Black text | 17.56:1 |
| White text | 1.19:1 |
Values
| HEX | #C4F3FB |
| RGB | rgb(196, 243, 251) |
| HSL | hsl(189, 87%, 88%) |
| OKLCH | oklch(93.4% 0.049 209) |
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 #C4F3FB | 1.19:1 | Fails | Lc -11.1 | Not readable |
| Black text on #C4F3FB | 17.56:1 | AAA | Lc 94.0 | Preferred for body text |
| #C4F3FB text on white | 1.19:1 | Fails | Lc 9.5 | Not readable |
| #C4F3FB text on black | 17.56:1 | AAA | Lc -94.7 | 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
#EFF7F8
oklch(97% 0.009 205.9)
-
Step 100
100 (this color)
#C4F3FB
oklch(93.4% 0.049 209)
-
Step 200
200
#BFE0E6
oklch(88.5% 0.036 209.8)
-
Step 300
300
#90CCD7
oklch(80.8% 0.063 210.2)
-
Step 400
400
#43B2C2
oklch(70.7% 0.101 208.5)
-
Step 500
500
#009BAD
oklch(63.1% 0.109 209.2)
-
Step 600
600
#008291
oklch(55.5% 0.096 208.9)
-
Step 700
700
#006D7A
oklch(49% 0.084 209.1)
-
Step 800
800
#005A65
oklch(42.8% 0.074 209.1)
-
Step 900
900
#004B54
oklch(37.8% 0.065 208.5)
-
Step 950
950
#002C33
oklch(26.9% 0.047 211.1)
#C4F3FB 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) | #EBEFFC | 0.048 |
| Deuteranopia (no green cones) | #E1E8FB | 0.043 |
| Tritanopia (no blue cones) | #B3F7F5 | 0.024 |
| Achromatopsia (no color) | #EBEBEB | 0.050 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C4F3FB
#C4F3FB
oklch(93.4% 0.049 209)
- #FFE1DC
#FFE1DC
oklch(93.3% 0.034 29)
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 #C4F3FB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Pale Sky Blue #BDF6FE ΔE 0.010
- Diamond #B9F2FF ΔE 0.014
- Duck Egg Blue #C3FBF4 ΔE 0.026
- Pale Turquoise #AFEEEE ΔE 0.033
- Pale Blue #D0FEFE ΔE 0.033
- Light Light Blue #CAFFFB ΔE 0.033
- Pale Cyan #B7FFFA ΔE 0.034
- Eggshell Blue #C4FFF7 ΔE 0.034
Use #C4F3FB 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.