#B5F9EF
Closest named color: Duck Egg Blue (#C3FBF4). oklch(93.4% 0.069 184.8), rgb(181, 249, 239).
Aa
Black text reads best on this color (17.76:1).
About this color
#B5F9EF is a very light, muted teal or cyan. In OKLCH its lightness is 93%, its chroma 0.069 and its hue 185°. Its hue sits on the cool side of the wheel. The nearest named color is Duck Egg Blue (#C3FBF4), ΔE 0.018 away. Black text reads best on it, at 17.76:1.
| Hue family | Teals and cyans |
| Lightness | very light (93%) |
| Chroma | muted (0.069) |
| Temperature | cool |
| Nearest name | Duck Egg Blue (#C3FBF4) |
| Black text | 17.76:1 |
| White text | 1.18:1 |
Values
| HEX | #B5F9EF |
| RGB | rgb(181, 249, 239) |
| HSL | hsl(171, 85%, 84%) |
| OKLCH | oklch(93.4% 0.069 184.8) |
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 #B5F9EF | 1.18:1 | Fails | Lc -10.3 | Not readable |
| Black text on #B5F9EF | 17.76:1 | AAA | Lc 94.8 | Preferred for body text |
| #B5F9EF text on white | 1.18:1 | Fails | Lc 8.7 | Not readable |
| #B5F9EF text on black | 17.76:1 | AAA | Lc -95.5 | 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
#EDF8F6
oklch(97% 0.012 184.1)
-
Step 100
100 (this color)
#B5F9EF
oklch(93.4% 0.069 184.8)
-
Step 200
200
#B6E4DD
oklch(88.5% 0.049 185)
-
Step 300
300
#7AD4C8
oklch(81% 0.089 184.7)
-
Step 400
400
#00B9AA
oklch(70.6% 0.125 184.7)
-
Step 500
500
#009F92
oklch(63.2% 0.111 184.7)
-
Step 600
600
#00867B
oklch(55.7% 0.098 184.8)
-
Step 700
700
#007067
oklch(49% 0.086 185.2)
-
Step 800
800
#005C54
oklch(42.7% 0.075 184.7)
-
Step 900
900
#004D46
oklch(37.8% 0.067 184.5)
-
Step 950
950
#002E29
oklch(27.1% 0.048 183.6)
#B5F9EF 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) | #F2F1EF | 0.074 |
| Deuteranopia (no green cones) | #E6E8F0 | 0.070 |
| Tritanopia (no blue cones) | #A0FCF6 | 0.021 |
| Achromatopsia (no color) | #ECECEC | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B5F9EF
#B5F9EF
oklch(93.4% 0.069 184.8)
- #FFE0E6
#FFE0E6
oklch(93.4% 0.035 4.6)
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 #B5F9EF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Duck Egg Blue #C3FBF4 ΔE 0.018
- Pale Cyan #B7FFFA ΔE 0.019
- Pale Aqua #B8FFEB ΔE 0.019
- Eggshell Blue #C4FFF7 ΔE 0.025
- Pale Sky Blue #BDF6FE ΔE 0.027
- Pale Turquoise #AFEEEE ΔE 0.031
- Light Light Blue #CAFFFB ΔE 0.033
- Diamond #B9F2FF ΔE 0.034
Use #B5F9EF 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.