#18E9F2
Closest named color: Bright Light Blue (#26F7FD). oklch(85% 0.142 199.9), rgb(24, 233, 242).
Aa
Black text reads best on this color (13.97:1).
About this color
#18E9F2 is a light, vivid teal or cyan. In OKLCH its lightness is 85%, its chroma 0.142 and its hue 200°. Its hue sits on the cool side of the wheel. The nearest named color is Bright Light Blue (#26F7FD), ΔE 0.039 away. Black text reads best on it, at 13.97:1.
| Hue family | Teals and cyans |
| Lightness | light (85%) |
| Chroma | vivid (0.142) |
| Temperature | cool |
| Nearest name | Bright Light Blue (#26F7FD) |
| Black text | 13.97:1 |
| White text | 1.50:1 |
Values
| HEX | #18E9F2 |
| RGB | rgb(24, 233, 242) |
| HSL | hsl(182, 89%, 52%) |
| OKLCH | oklch(85% 0.142 199.9) |
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 #18E9F2 | 1.50:1 | Fails | Lc -26.0 | Dividers and decoration only |
| Black text on #18E9F2 | 13.97:1 | AAA | Lc 80.9 | Fine for body text |
| #18E9F2 text on white | 1.50:1 | Fails | Lc 22.9 | Dividers and decoration only |
| #18E9F2 text on black | 13.97:1 | AAA | Lc -80.4 | 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
#E4FBFC
oklch(97.2% 0.024 199.9)
-
Step 100
100
#C1F5F8
oklch(93.5% 0.053 200.7)
-
Step 200
200 (this color)
#18E9F2
oklch(85% 0.142 199.9)
-
Step 300
300
#00DBE3
oklch(81% 0.138 199.5)
-
Step 400
400
#00B7BE
oklch(70.8% 0.12 199.7)
-
Step 500
500
#009CA3
oklch(63% 0.107 200.4)
-
Step 600
600
#008489
oklch(55.7% 0.095 199.5)
-
Step 700
700
#006F73
oklch(49.2% 0.084 199.2)
-
Step 800
800
#005B5F
oklch(42.8% 0.073 200)
-
Step 900
900
#004C4F
oklch(37.8% 0.064 199.4)
-
Step 950
950
#002D2F
oklch(27% 0.046 199.4)
#18E9F2 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) | #D7DEF3 | 0.145 |
| Deuteranopia (no green cones) | #BCCAF3 | 0.135 |
| Tritanopia (no blue cones) | #00F2EB | 0.030 |
| Achromatopsia (no color) | #D3D3D3 | 0.143 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #18E9F2
#18E9F2
oklch(85% 0.142 199.9)
- #FFB9B8
#FFB9B8
oklch(85% 0.082 19.8)
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 #18E9F2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bright Light Blue #26F7FD ΔE 0.039
- Robin's Egg #6DEDFD ΔE 0.043
- Turquoise #40E0D0 ΔE 0.046
- Aqua Blue #02D8E9 ΔE 0.047
- Bright Aqua #0BF9EA ΔE 0.049
- Bright Turquoise #0FFEF9 ΔE 0.056
- Bright Cyan #41FDFE ΔE 0.057
- Cyan #00FFFF ΔE 0.058
Use #18E9F2 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.