#05C3E1
Closest named color: Vivid Sky Blue (#4CC9F0). oklch(75.2% 0.132 214), rgb(5, 195, 225).
Aa
Black text reads best on this color (9.89:1).
About this color
#05C3E1 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 75%, its chroma 0.132 and its hue 214°. Its hue sits on the cool side of the wheel. The nearest named color is Vivid Sky Blue (#4CC9F0), ΔE 0.037 away. Black text reads best on it, at 9.89:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (75%) |
| Chroma | moderately saturated (0.132) |
| Temperature | cool |
| Nearest name | Vivid Sky Blue (#4CC9F0) |
| Black text | 9.89:1 |
| White text | 2.12:1 |
Values
| HEX | #05C3E1 |
| RGB | rgb(5, 195, 225) |
| HSL | hsl(188, 96%, 45%) |
| OKLCH | oklch(75.2% 0.132 214) |
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 #05C3E1 | 2.12:1 | Fails | Lc -45.5 | Large or bold text, headings |
| Black text on #05C3E1 | 9.89:1 | AAA | Lc 63.0 | Content text, not long reading |
| #05C3E1 text on white | 2.12:1 | Fails | Lc 40.9 | Non-text elements, placeholder text |
| #05C3E1 text on black | 9.89:1 | AAA | Lc -61.4 | 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
#EEF8FA
oklch(97.2% 0.011 211)
-
Step 100
100
#D9EEF4
oklch(93.5% 0.024 216.7)
-
Step 200
200
#B8E2EC
oklch(88.6% 0.046 213.8)
-
Step 300
300
#7FCFE1
oklch(80.9% 0.082 213.7)
-
Step 400
400 (this color)
#05C3E1
oklch(75.2% 0.132 214)
-
Step 500
500
#009AB2
oklch(63.1% 0.111 213.9)
-
Step 600
600
#008196
oklch(55.5% 0.098 214.4)
-
Step 700
700
#006D7E
oklch(49.1% 0.086 213.3)
-
Step 800
800
#005968
oklch(42.7% 0.075 214.2)
-
Step 900
900
#004A57
oklch(37.6% 0.066 214.5)
-
Step 950
950
#002C35
oklch(27% 0.048 215.4)
#05C3E1 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) | #ADBCE3 | 0.118 |
| Deuteranopia (no green cones) | #95AAE1 | 0.107 |
| Tritanopia (no blue cones) | #00CECC | 0.050 |
| Achromatopsia (no color) | #B2B2B2 | 0.132 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #05C3E1
#05C3E1
oklch(75.2% 0.132 214)
- #F68E76
#F68E76
oklch(75.2% 0.132 33.9)
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 #05C3E1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Vivid Sky Blue #4CC9F0 ΔE 0.037
- Bright Sky Blue #02CCFE ΔE 0.044
- Dark Turquoise #00CED1 ΔE 0.045
- Deep Sky Blue #00BFFF ΔE 0.049
- Aqua Blue #02D8E9 ΔE 0.058
- Turquoise Blue #06B1C4 ΔE 0.058
- Medium Turquoise #48D1CC ΔE 0.062
- Topaz #13BBAF ΔE 0.071
Use #05C3E1 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.