#15F3E3
Closest named color: Bright Aqua (#0BF9EA). oklch(86.9% 0.15 186.3), rgb(21, 243, 227).
Aa
Black text reads best on this color (14.96:1).
About this color
#15F3E3 is a light, vivid teal or cyan. In OKLCH its lightness is 87%, its chroma 0.150 and its hue 186°. Its hue sits on the cool side of the wheel. The nearest named color is Bright Aqua (#0BF9EA), ΔE 0.017 away. Black text reads best on it, at 14.96:1.
| Hue family | Teals and cyans |
| Lightness | light (87%) |
| Chroma | vivid (0.150) |
| Temperature | cool |
| Nearest name | Bright Aqua (#0BF9EA) |
| Black text | 14.96:1 |
| White text | 1.40:1 |
Values
| HEX | #15F3E3 |
| RGB | rgb(21, 243, 227) |
| HSL | hsl(176, 90%, 52%) |
| OKLCH | oklch(86.9% 0.15 186.3) |
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 #15F3E3 | 1.40:1 | Fails | Lc -21.5 | Dividers and decoration only |
| Black text on #15F3E3 | 14.96:1 | AAA | Lc 84.8 | Fine for body text |
| #15F3E3 text on white | 1.40:1 | Fails | Lc 18.9 | Dividers and decoration only |
| #15F3E3 text on black | 14.96:1 | AAA | Lc -84.6 | 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
#E3FCF8
oklch(97.2% 0.027 185.2)
-
Step 100
100
#C0F7F0
oklch(93.7% 0.056 186.6)
-
Step 200
200 (this color)
#15F3E3
oklch(86.9% 0.15 186.3)
-
Step 300
300
#00DDCF
oklch(80.8% 0.141 186.7)
-
Step 400
400
#00B9AC
oklch(70.7% 0.124 186)
-
Step 500
500
#009F94
oklch(63.2% 0.111 186.2)
-
Step 600
600
#00857C
oklch(55.5% 0.097 186.5)
-
Step 700
700
#007068
oklch(49.1% 0.086 186.2)
-
Step 800
800
#005C55
oklch(42.7% 0.075 185.9)
-
Step 900
900
#004D47
oklch(37.8% 0.066 185.9)
-
Step 950
950
#002E2A
oklch(27.1% 0.048 185.8)
#15F3E3 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) | #E5E5E3 | 0.159 |
| Deuteranopia (no green cones) | #CBD2E5 | 0.150 |
| Tritanopia (no blue cones) | #00F9EE | 0.019 |
| Achromatopsia (no color) | #DADADA | 0.152 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #15F3E3
#15F3E3
oklch(86.9% 0.15 186.3)
- #FFC0CC
#FFC0CC
oklch(86.8% 0.074 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 #15F3E3, closest first.
No curated palette has a color within ΔE 0.04 of #15F3E3.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bright Aqua #0BF9EA ΔE 0.017
- Bright Light Blue #26F7FD ΔE 0.036
- Bright Turquoise #0FFEF9 ΔE 0.037
- Cyan #00FFFF ΔE 0.043
- Bright Cyan #41FDFE ΔE 0.045
- Bright Teal #01F9C6 ΔE 0.049
- Turquoise #40E0D0 ΔE 0.050
- Light Turquoise #7EF4CC ΔE 0.053
Use #15F3E3 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.