#B4E9FB
Closest named color: Diamond (#B9F2FF). oklch(90.3% 0.059 220.7), rgb(180, 233, 251).
Aa
Black text reads best on this color (15.98:1).
About this color
#B4E9FB is a very light, muted teal or cyan. In OKLCH its lightness is 90%, its chroma 0.059 and its hue 221°. Its hue sits on the cool side of the wheel. The nearest named color is Diamond (#B9F2FF), ΔE 0.024 away. Black text reads best on it, at 15.98:1.
| Hue family | Teals and cyans |
| Lightness | very light (90%) |
| Chroma | muted (0.059) |
| Temperature | cool |
| Nearest name | Diamond (#B9F2FF) |
| Black text | 15.98:1 |
| White text | 1.31:1 |
Values
| HEX | #B4E9FB |
| RGB | rgb(180, 233, 251) |
| HSL | hsl(195, 90%, 85%) |
| OKLCH | oklch(90.3% 0.059 220.7) |
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 #B4E9FB | 1.31:1 | Fails | Lc -17.8 | Dividers and decoration only |
| Black text on #B4E9FB | 15.98:1 | AAA | Lc 88.2 | Fine for body text |
| #B4E9FB text on white | 1.31:1 | Fails | Lc 15.5 | Dividers and decoration only |
| #B4E9FB text on black | 15.98:1 | AAA | Lc -88.3 | Fine 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 200.
-
Step 50
50
#EEF7FA
oklch(97% 0.01 219.6)
-
Step 100
100
#DBEEF4
oklch(93.7% 0.022 218.6)
-
Step 200
200 (this color)
#B4E9FB
oklch(90.3% 0.059 220.7)
-
Step 300
300
#87CDE3
oklch(81% 0.077 219.7)
-
Step 400
400
#24B1D6
oklch(70.6% 0.123 221.2)
-
Step 500
500
#0099BA
oklch(63.2% 0.115 220.3)
-
Step 600
600
#00809D
oklch(55.6% 0.102 221.1)
-
Step 700
700
#006C84
oklch(49.2% 0.09 220.2)
-
Step 800
800
#00586D
oklch(42.6% 0.078 221.3)
-
Step 900
900
#004A5B
oklch(37.8% 0.069 219.8)
-
Step 950
950
#002C37
oklch(27.1% 0.049 219.4)
#B4E9FB 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) | #DEE6FC | 0.051 |
| Deuteranopia (no green cones) | #D3DDFB | 0.046 |
| Tritanopia (no blue cones) | #9DEFEE | 0.037 |
| Achromatopsia (no color) | #E1E1E1 | 0.060 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #B4E9FB
#B4E9FB
oklch(90.3% 0.059 220.7)
- #FFD4C5
#FFD4C5
oklch(90.3% 0.053 40.1)
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 #B4E9FB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Diamond #B9F2FF ΔE 0.024
- Pale Turquoise #AFEEEE ΔE 0.027
- Robin's Egg Blue #98EFF9 ΔE 0.032
- Powder Blue #B0E0E6 ΔE 0.033
- Pale Sky Blue #BDF6FE ΔE 0.036
- Robin Egg Blue #8AF1FE ΔE 0.043
- Light Blue #ADD8E6 ΔE 0.048
- Celeste #A8DADC ΔE 0.054
Use #B4E9FB 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.