#18F8EB
Closest named color: Bright Aqua (#0BF9EA). oklch(88.3% 0.151 188), rgb(24, 248, 235).
Aa
Black text reads best on this color (15.66:1).
About this color
#18F8EB is a light, vivid teal or cyan. In OKLCH its lightness is 88%, its chroma 0.151 and its hue 188°. Its hue sits on the cool side of the wheel. The nearest named color is Bright Aqua (#0BF9EA), ΔE 0.004 away. Black text reads best on it, at 15.66:1.
| Hue family | Teals and cyans |
| Lightness | light (88%) |
| Chroma | vivid (0.151) |
| Temperature | cool |
| Nearest name | Bright Aqua (#0BF9EA) |
| Black text | 15.66:1 |
| White text | 1.34:1 |
Values
| HEX | #18F8EB |
| RGB | rgb(24, 248, 235) |
| HSL | hsl(177, 94%, 53%) |
| OKLCH | oklch(88.3% 0.151 188) |
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 #18F8EB | 1.34:1 | Fails | Lc -18.5 | Dividers and decoration only |
| Black text on #18F8EB | 15.66:1 | AAA | Lc 87.5 | Fine for body text |
| #18F8EB text on white | 1.34:1 | Fails | Lc 16.1 | Dividers and decoration only |
| #18F8EB text on black | 15.66:1 | AAA | Lc -87.6 | 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
#E3FCF9
oklch(97.2% 0.026 188)
-
Step 100
100
#C0F7F1
oklch(93.7% 0.056 188)
-
Step 200
200 (this color)
#18F8EB
oklch(88.3% 0.151 188)
-
Step 300
300
#00DDD1
oklch(80.9% 0.141 187.9)
-
Step 400
400
#00B9AF
oklch(70.8% 0.123 188)
-
Step 500
500
#009E96
oklch(63% 0.109 188.5)
-
Step 600
600
#00857E
oklch(55.6% 0.097 188.3)
-
Step 700
700
#00706A
oklch(49.1% 0.085 188.3)
-
Step 800
800
#005C56
oklch(42.8% 0.075 187.1)
-
Step 900
900
#004D48
oklch(37.8% 0.066 187.3)
-
Step 950
950
#002E2B
oklch(27.1% 0.047 188)
#18F8EB 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) | #EAEAEB | 0.161 |
| Deuteranopia (no green cones) | #CFD6ED | 0.152 |
| Tritanopia (no blue cones) | #00FFF4 | 0.019 |
| Achromatopsia (no color) | #DEDEDE | 0.152 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #18F8EB
#18F8EB
oklch(88.3% 0.151 188)
- #FFC8D0
#FFC8D0
oklch(88.3% 0.063 8.7)
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 #18F8EB, closest first.
No curated palette has a color within ΔE 0.04 of #18F8EB.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bright Aqua #0BF9EA ΔE 0.004
- Bright Turquoise #0FFEF9 ΔE 0.022
- Bright Light Blue #26F7FD ΔE 0.027
- Cyan #00FFFF ΔE 0.029
- Bright Cyan #41FDFE ΔE 0.031
- Bright Teal #01F9C6 ΔE 0.053
- Light Turquoise #7EF4CC ΔE 0.054
- Robin's Egg #6DEDFD ΔE 0.056
Use #18F8EB 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.