#00C5D4
Closest named color: Dark Turquoise (#00CED1). oklch(75.1% 0.128 204.5), rgb(0, 197, 212).
Aa
Black text reads best on this color (9.93:1).
About this color
#00C5D4 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 75%, its chroma 0.128 and its hue 205°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Turquoise (#00CED1), ΔE 0.028 away. Black text reads best on it, at 9.93:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (75%) |
| Chroma | moderately saturated (0.128) |
| Temperature | cool |
| Nearest name | Dark Turquoise (#00CED1) |
| Black text | 9.93:1 |
| White text | 2.11:1 |
Values
| HEX | #00C5D4 |
| RGB | rgb(0, 197, 212) |
| HSL | hsl(184, 100%, 42%) |
| OKLCH | oklch(75.1% 0.128 204.5) |
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 #00C5D4 | 2.11:1 | Fails | Lc -45.3 | Large or bold text, headings |
| Black text on #00C5D4 | 9.93:1 | AAA | Lc 63.2 | Content text, not long reading |
| #00C5D4 text on white | 2.11:1 | Fails | Lc 40.7 | Non-text elements, placeholder text |
| #00C5D4 text on black | 9.93:1 | AAA | Lc -61.6 | 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
#EEF8F9
oklch(97.2% 0.011 204.1)
-
Step 100
100
#D9EFF1
oklch(93.7% 0.023 203.4)
-
Step 200
200
#B8E2E7
oklch(88.5% 0.044 205.3)
-
Step 300
300
#7FD0D9
oklch(80.9% 0.08 204.8)
-
Step 400
400 (this color)
#00C5D4
oklch(75.1% 0.128 204.5)
-
Step 500
500
#009CA8
oklch(63.2% 0.108 204.4)
-
Step 600
600
#00838D
oklch(55.6% 0.095 204.2)
-
Step 700
700
#006E77
oklch(49.1% 0.084 204.7)
-
Step 800
800
#005A62
oklch(42.7% 0.073 205.3)
-
Step 900
900
#004B51
oklch(37.6% 0.064 204)
-
Step 950
950
#002D31
oklch(27.1% 0.046 204.1)
#00C5D4 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) | #B3BCD5 | 0.126 |
| Deuteranopia (no green cones) | #9CABD4 | 0.116 |
| Tritanopia (no blue cones) | #00CEC9 | 0.035 |
| Achromatopsia (no color) | #B2B2B2 | 0.129 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #00C5D4
#00C5D4
oklch(75.1% 0.128 204.5)
- #F58C85
#F58C85
oklch(75.1% 0.129 24.6)
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 #00C5D4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Turquoise #00CED1 ΔE 0.028
- Medium Turquoise #48D1CC ΔE 0.047
- Vivid Sky Blue #4CC9F0 ΔE 0.050
- Topaz #13BBAF ΔE 0.054
- Aqua Blue #02D8E9 ΔE 0.055
- Turquoise Blue #06B1C4 ΔE 0.056
- Bright Sky Blue #02CCFE ΔE 0.060
- Light Sea Green #20B2AA ΔE 0.070
Use #00C5D4 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.