#5BF9EF
Closest named color: Bright Cyan (#41FDFE). oklch(89.7% 0.132 189.1), rgb(91, 249, 239).
Aa
Black text reads best on this color (16.24:1).
About this color
#5BF9EF is a light, moderately saturated teal or cyan. In OKLCH its lightness is 90%, its chroma 0.132 and its hue 189°. Its hue sits on the cool side of the wheel. The nearest named color is Bright Cyan (#41FDFE), ΔE 0.021 away. Black text reads best on it, at 16.24:1.
| Hue family | Teals and cyans |
| Lightness | light (90%) |
| Chroma | moderately saturated (0.132) |
| Temperature | cool |
| Nearest name | Bright Cyan (#41FDFE) |
| Black text | 16.24:1 |
| White text | 1.29:1 |
Values
| HEX | #5BF9EF |
| RGB | rgb(91, 249, 239) |
| HSL | hsl(176, 93%, 67%) |
| OKLCH | oklch(89.7% 0.132 189.1) |
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 #5BF9EF | 1.29:1 | Fails | Lc -16.3 | Dividers and decoration only |
| Black text on #5BF9EF | 16.24:1 | AAA | Lc 89.5 | Fine for body text |
| #5BF9EF text on white | 1.29:1 | Fails | Lc 14.2 | Not readable |
| #5BF9EF text on black | 16.24:1 | AAA | Lc -89.7 | 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
#E5FBF8
oklch(97.1% 0.023 186.9)
-
Step 100
100
#C6F5F0
oklch(93.6% 0.049 188.4)
-
Step 200
200 (this color)
#5BF9EF
oklch(89.7% 0.132 189.1)
-
Step 300
300
#00DDD3
oklch(80.9% 0.14 189)
-
Step 400
400
#00B8B0
oklch(70.6% 0.122 189.3)
-
Step 500
500
#009E97
oklch(63.1% 0.109 189.2)
-
Step 600
600
#00857F
oklch(55.6% 0.096 189.2)
-
Step 700
700
#00706B
oklch(49.2% 0.085 189.4)
-
Step 800
800
#005C57
oklch(42.8% 0.074 188.4)
-
Step 900
900
#004C49
oklch(37.6% 0.065 190.2)
-
Step 950
950
#002E2B
oklch(27.1% 0.047 188)
#5BF9EF 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) | #ECECEF | 0.140 |
| Deuteranopia (no green cones) | #D4DBF1 | 0.131 |
| Tritanopia (no blue cones) | #00FFF6 | 0.025 |
| Achromatopsia (no color) | #E2E2E2 | 0.133 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5BF9EF
#5BF9EF
oklch(89.7% 0.132 189.1)
- #FFCFD5
#FFCFD5
oklch(89.8% 0.055 9.8)
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 #5BF9EF, closest first.
No curated palette has a color within ΔE 0.04 of #5BF9EF.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bright Cyan #41FDFE ΔE 0.021
- Bright Turquoise #0FFEF9 ΔE 0.024
- Bright Aqua #0BF9EA ΔE 0.026
- Bright Light Blue #26F7FD ΔE 0.028
- Cyan #00FFFF ΔE 0.028
- Robin's Egg #6DEDFD ΔE 0.044
- Light Turquoise #7EF4CC ΔE 0.046
- Robin Egg Blue #8AF1FE ΔE 0.048
Use #5BF9EF 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.