#01E3F8
Closest named color: Aqua Blue (#02D8E9). oklch(83.7% 0.143 206.7), rgb(1, 227, 248).
Aa
Black text reads best on this color (13.34:1).
About this color
#01E3F8 is a light, vivid teal or cyan. In OKLCH its lightness is 84%, its chroma 0.143 and its hue 207°. Its hue sits on the cool side of the wheel. The nearest named color is Aqua Blue (#02D8E9), ΔE 0.033 away. Black text reads best on it, at 13.34:1.
| Hue family | Teals and cyans |
| Lightness | light (84%) |
| Chroma | vivid (0.143) |
| Temperature | cool |
| Nearest name | Aqua Blue (#02D8E9) |
| Black text | 13.34:1 |
| White text | 1.57:1 |
Values
| HEX | #01E3F8 |
| RGB | rgb(1, 227, 248) |
| HSL | hsl(185, 99%, 49%) |
| OKLCH | oklch(83.7% 0.143 206.7) |
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 #01E3F8 | 1.57:1 | Fails | Lc -28.8 | Dividers and decoration only |
| Black text on #01E3F8 | 13.34:1 | AAA | Lc 78.4 | Fine for body text |
| #01E3F8 text on white | 1.57:1 | Fails | Lc 25.4 | Dividers and decoration only |
| #01E3F8 text on black | 13.34:1 | AAA | Lc -77.7 | 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 300.
-
Step 50
50
#E8F9FC
oklch(97% 0.018 209.4)
-
Step 100
100
#CBF2F8
oklch(93.5% 0.041 207.8)
-
Step 200
200
#99E9F4
oklch(88.6% 0.08 206.8)
-
Step 300
300 (this color)
#01E3F8
oklch(83.7% 0.143 206.7)
-
Step 400
400
#00B5C6
oklch(70.6% 0.121 206.7)
-
Step 500
500
#009BAA
oklch(63% 0.108 206.9)
-
Step 600
600
#00838F
oklch(55.7% 0.095 206.1)
-
Step 700
700
#006E79
oklch(49.2% 0.084 206.9)
-
Step 800
800
#005A63
oklch(42.7% 0.073 206.6)
-
Step 900
900
#004B53
oklch(37.7% 0.065 207)
-
Step 950
950
#002D32
oklch(27.1% 0.046 206.3)
#01E3F8 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) | #CED9F9 | 0.139 |
| Deuteranopia (no green cones) | #B2C5F8 | 0.127 |
| Tritanopia (no blue cones) | #00EEE9 | 0.043 |
| Achromatopsia (no color) | #CECECE | 0.144 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #01E3F8
#01E3F8
oklch(83.7% 0.143 206.7)
- #FFB3AA
#FFB3AA
oklch(83.6% 0.09 26.7)
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 #01E3F8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Aqua Blue #02D8E9 ΔE 0.033
- Robin's Egg #6DEDFD ΔE 0.052
- Turquoise #40E0D0 ΔE 0.055
- Bright Light Blue #26F7FD ΔE 0.056
- Medium Turquoise #48D1CC ΔE 0.066
- Bright Sky Blue #02CCFE ΔE 0.067
- Vivid Sky Blue #4CC9F0 ΔE 0.069
- Dark Turquoise #00CED1 ΔE 0.070
Use #01E3F8 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.