#B4EFFF
Closest named color: Diamond (#B9F2FF). oklch(91.7% 0.063 216.3), rgb(180, 239, 255).
Aa
Black text reads best on this color (16.73:1).
About this color
#B4EFFF is a very light, muted teal or cyan. In OKLCH its lightness is 92%, its chroma 0.063 and its hue 216°. Its hue sits on the cool side of the wheel. The nearest named color is Diamond (#B9F2FF), ΔE 0.010 away. Black text reads best on it, at 16.73:1.
| Hue family | Teals and cyans |
| Lightness | very light (92%) |
| Chroma | muted (0.063) |
| Temperature | cool |
| Nearest name | Diamond (#B9F2FF) |
| Black text | 16.73:1 |
| White text | 1.25:1 |
Values
| HEX | #B4EFFF |
| RGB | rgb(180, 239, 255) |
| HSL | hsl(193, 100%, 85%) |
| OKLCH | oklch(91.7% 0.063 216.3) |
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 #B4EFFF | 1.25:1 | Fails | Lc -14.6 | Not readable |
| Black text on #B4EFFF | 16.73:1 | AAA | Lc 91.0 | Preferred for body text |
| #B4EFFF text on white | 1.25:1 | Fails | Lc 12.6 | Not readable |
| #B4EFFF text on black | 16.73:1 | AAA | Lc -91.3 | 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
#EEF7FA
oklch(97% 0.01 219.6)
-
Step 100
100 (this color)
#B4EFFF
oklch(91.7% 0.063 216.3)
-
Step 200
200
#B8E1EC
oklch(88.4% 0.045 215.8)
-
Step 300
300
#81CEE2
oklch(80.9% 0.081 216.1)
-
Step 400
400
#00B3D3
oklch(70.7% 0.126 216.7)
-
Step 500
500
#009AB5
oklch(63.2% 0.112 216)
-
Step 600
600
#008198
oklch(55.6% 0.099 216.1)
-
Step 700
700
#006C80
oklch(49% 0.087 216.4)
-
Step 800
800
#00596A
oklch(42.8% 0.076 216.6)
-
Step 900
900
#004A58
oklch(37.7% 0.067 215.8)
-
Step 950
950
#002C35
oklch(27% 0.048 215.4)
#B4EFFF 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) | #E4EBFF | 0.057 |
| Deuteranopia (no green cones) | #D7E1FF | 0.052 |
| Tritanopia (no blue cones) | #9BF5F4 | 0.036 |
| Achromatopsia (no color) | #E5E5E5 | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B4EFFF
#B4EFFF
oklch(91.7% 0.063 216.3)
- #FFDAD0
#FFDAD0
oklch(91.7% 0.044 35.6)
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 #B4EFFF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Diamond #B9F2FF ΔE 0.010
- Pale Sky Blue #BDF6FE ΔE 0.023
- Pale Turquoise #AFEEEE ΔE 0.024
- Robin's Egg Blue #98EFF9 ΔE 0.031
- Robin Egg Blue #8AF1FE ΔE 0.041
- Duck Egg Blue #C3FBF4 ΔE 0.044
- Powder Blue #B0E0E6 ΔE 0.045
- Pale Cyan #B7FFFA ΔE 0.046
Use #B4EFFF 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.