#15F9E4
Closest named color: Bright Aqua (#0BF9EA). oklch(88.3% 0.155 184), rgb(21, 249, 228).
Aa
Black text reads best on this color (15.70:1).
About this color
#15F9E4 is a light, vivid teal or cyan. In OKLCH its lightness is 88%, its chroma 0.155 and its hue 184°. Its hue sits on the cool side of the wheel. The nearest named color is Bright Aqua (#0BF9EA), ΔE 0.008 away. Black text reads best on it, at 15.70:1.
| Hue family | Teals and cyans |
| Lightness | light (88%) |
| Chroma | vivid (0.155) |
| Temperature | cool |
| Nearest name | Bright Aqua (#0BF9EA) |
| Black text | 15.70:1 |
| White text | 1.33:1 |
Values
| HEX | #15F9E4 |
| RGB | rgb(21, 249, 228) |
| HSL | hsl(174, 95%, 53%) |
| OKLCH | oklch(88.3% 0.155 184) |
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 #15F9E4 | 1.33:1 | Fails | Lc -18.3 | Dividers and decoration only |
| Black text on #15F9E4 | 15.70:1 | AAA | Lc 87.7 | Fine for body text |
| #15F9E4 text on white | 1.33:1 | Fails | Lc 15.9 | Dividers and decoration only |
| #15F9E4 text on black | 15.70:1 | AAA | Lc -87.8 | 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
#E3FCF7
oklch(97.2% 0.027 182.4)
-
Step 100
100
#C0F7EE
oklch(93.6% 0.057 184)
-
Step 200
200 (this color)
#15F9E4
oklch(88.3% 0.155 184)
-
Step 300
300
#00DECB
oklch(80.9% 0.143 184)
-
Step 400
400
#00B9A9
oklch(70.6% 0.125 184)
-
Step 500
500
#009F91
oklch(63.1% 0.112 184)
-
Step 600
600
#00867A
oklch(55.7% 0.099 183.9)
-
Step 700
700
#007066
oklch(49% 0.087 184.2)
-
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)
#15F9E4 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) | #ECEAE3 | 0.164 |
| Deuteranopia (no green cones) | #D2D6E6 | 0.157 |
| Tritanopia (no blue cones) | #00FFF2 | 0.021 |
| Achromatopsia (no color) | #DFDFDF | 0.156 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #15F9E4
#15F9E4
oklch(88.3% 0.155 184)
- #FFC7D3
#FFC7D3
oklch(88.2% 0.065 4.2)
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 #15F9E4, closest first.
No curated palette has a color within ΔE 0.04 of #15F9E4.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bright Aqua #0BF9EA ΔE 0.008
- Bright Turquoise #0FFEF9 ΔE 0.029
- Cyan #00FFFF ΔE 0.036
- Bright Light Blue #26F7FD ΔE 0.038
- Bright Cyan #41FDFE ΔE 0.039
- Bright Teal #01F9C6 ΔE 0.042
- Light Turquoise #7EF4CC ΔE 0.048
- Aquamarine #7FFFD4 ΔE 0.054
Use #15F9E4 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.