#01C3EE
Closest named color: Bright Sky Blue (#02CCFE). oklch(75.7% 0.139 221.3), rgb(1, 195, 238).
Aa
Black text reads best on this color (10.04:1).
About this color
#01C3EE is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 76%, its chroma 0.139 and its hue 221°. Its hue sits on the cool side of the wheel. The nearest named color is Bright Sky Blue (#02CCFE), ΔE 0.030 away. Black text reads best on it, at 10.04:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (76%) |
| Chroma | moderately saturated (0.139) |
| Temperature | cool |
| Nearest name | Bright Sky Blue (#02CCFE) |
| Black text | 10.04:1 |
| White text | 2.09:1 |
Values
| HEX | #01C3EE |
| RGB | rgb(1, 195, 238) |
| HSL | hsl(191, 99%, 47%) |
| OKLCH | oklch(75.7% 0.139 221.3) |
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 #01C3EE | 2.09:1 | Fails | Lc -44.8 | Non-text elements, placeholder text |
| Black text on #01C3EE | 10.04:1 | AAA | Lc 63.7 | Content text, not long reading |
| #01C3EE text on white | 2.09:1 | Fails | Lc 40.2 | Non-text elements, placeholder text |
| #01C3EE text on black | 10.04:1 | AAA | Lc -62.1 | Content text, not long reading |
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 400.
-
Step 50
50
#EDF7FB
oklch(97% 0.012 223.5)
-
Step 100
100
#D9EEF6
oklch(93.6% 0.025 222.6)
-
Step 200
200
#B7E1F0
oklch(88.5% 0.048 221.6)
-
Step 300
300
#7ECEE8
oklch(80.9% 0.087 220.8)
-
Step 400
400 (this color)
#01C3EE
oklch(75.7% 0.139 221.3)
-
Step 500
500
#0098BB
oklch(63% 0.116 221.8)
-
Step 600
600
#00809D
oklch(55.6% 0.102 221.1)
-
Step 700
700
#006C85
oklch(49.2% 0.09 221.2)
-
Step 800
800
#00586D
oklch(42.6% 0.078 221.3)
-
Step 900
900
#00495B
oklch(37.6% 0.069 221.4)
-
Step 950
950
#002C37
oklch(27.1% 0.049 219.4)
#01C3EE 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) | #A9BEF0 | 0.112 |
| Deuteranopia (no green cones) | #8FABEE | 0.099 |
| Tritanopia (no blue cones) | #00D0D1 | 0.064 |
| Achromatopsia (no color) | #B3B3B3 | 0.139 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #01C3EE
#01C3EE
oklch(75.7% 0.139 221.3)
- #F99068
#F99068
oklch(75.7% 0.139 41.3)
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 #01C3EE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bright Sky Blue #02CCFE ΔE 0.030
- Deep Sky Blue #00BFFF ΔE 0.030
- Vivid Sky Blue #4CC9F0 ΔE 0.031
- Dark Turquoise #00CED1 ΔE 0.060
- Aqua Blue #02D8E9 ΔE 0.062
- Lightblue #7BC8F6 ΔE 0.065
- Turquoise Blue #06B1C4 ΔE 0.070
- Medium Turquoise #48D1CC ΔE 0.075
Use #01C3EE 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.