#18F4EA
Closest named color: Bright Aqua (#0BF9EA). oklch(87.3% 0.149 189.5), rgb(24, 244, 234).
Aa
Black text reads best on this color (15.16:1).
About this color
#18F4EA is a light, vivid teal or cyan. In OKLCH its lightness is 87%, its chroma 0.149 and its hue 189°. Its hue sits on the cool side of the wheel. The nearest named color is Bright Aqua (#0BF9EA), ΔE 0.014 away. Black text reads best on it, at 15.16:1.
| Hue family | Teals and cyans |
| Lightness | light (87%) |
| Chroma | vivid (0.149) |
| Temperature | cool |
| Nearest name | Bright Aqua (#0BF9EA) |
| Black text | 15.16:1 |
| White text | 1.38:1 |
Values
| HEX | #18F4EA |
| RGB | rgb(24, 244, 234) |
| HSL | hsl(177, 91%, 53%) |
| OKLCH | oklch(87.3% 0.149 189.5) |
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 #18F4EA | 1.38:1 | Fails | Lc -20.7 | Dividers and decoration only |
| Black text on #18F4EA | 15.16:1 | AAA | Lc 85.6 | Fine for body text |
| #18F4EA text on white | 1.38:1 | Fails | Lc 18.1 | Dividers and decoration only |
| #18F4EA text on black | 15.16:1 | AAA | Lc -85.5 | 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
#E3FBF9
oklch(97% 0.025 190.7)
-
Step 100
100
#C0F6F2
oklch(93.5% 0.055 190.6)
-
Step 200
200 (this color)
#18F4EA
oklch(87.3% 0.149 189.5)
-
Step 300
300
#00DDD4
oklch(81% 0.14 189.6)
-
Step 400
400
#00B8B1
oklch(70.6% 0.122 190)
-
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)
#18F4EA 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) | #E5E6EA | 0.157 |
| Deuteranopia (no green cones) | #CBD3EC | 0.148 |
| Tritanopia (no blue cones) | #00FBF1 | 0.019 |
| Achromatopsia (no color) | #DBDBDB | 0.150 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #18F4EA
#18F4EA
oklch(87.3% 0.149 189.5)
- #FFC3CB
#FFC3CB
oklch(87.3% 0.069 9.7)
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 #18F4EA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bright Aqua #0BF9EA ΔE 0.014
- Bright Light Blue #26F7FD ΔE 0.027
- Bright Turquoise #0FFEF9 ΔE 0.029
- Cyan #00FFFF ΔE 0.035
- Bright Cyan #41FDFE ΔE 0.037
- Robin's Egg #6DEDFD ΔE 0.052
- Turquoise #40E0D0 ΔE 0.055
- Light Turquoise #7EF4CC ΔE 0.056
Use #18F4EA 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.