#05C9B3
Closest named color: Topaz (#13BBAF). oklch(75% 0.134 181.2), rgb(5, 201, 179).
Aa
Black text reads best on this color (10.01:1).
About this color
#05C9B3 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 75%, its chroma 0.134 and its hue 181°. Its hue sits on the cool side of the wheel. The nearest named color is Topaz (#13BBAF), ΔE 0.040 away. Black text reads best on it, at 10.01:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (75%) |
| Chroma | moderately saturated (0.134) |
| Temperature | cool |
| Nearest name | Topaz (#13BBAF) |
| Black text | 10.01:1 |
| White text | 2.09:1 |
Values
| HEX | #05C9B3 |
| RGB | rgb(5, 201, 179) |
| HSL | hsl(173, 95%, 40%) |
| OKLCH | oklch(75% 0.134 181.2) |
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 #05C9B3 | 2.09:1 | Fails | Lc -44.9 | Non-text elements, placeholder text |
| Black text on #05C9B3 | 10.01:1 | AAA | Lc 63.6 | Content text, not long reading |
| #05C9B3 text on white | 2.09:1 | Fails | Lc 40.4 | Non-text elements, placeholder text |
| #05C9B3 text on black | 10.01:1 | AAA | Lc -61.9 | 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
#EEF8F6
oklch(97.1% 0.011 182.9)
-
Step 100
100
#D9F0EB
oklch(93.7% 0.025 181.3)
-
Step 200
200
#B8E4DB
oklch(88.5% 0.047 181.3)
-
Step 300
300
#80D3C4
oklch(81% 0.084 181.3)
-
Step 400
400 (this color)
#05C9B3
oklch(75% 0.134 181.2)
-
Step 500
500
#009F8E
oklch(63% 0.113 181.8)
-
Step 600
600
#008677
oklch(55.6% 0.1 181.4)
-
Step 700
700
#007164
oklch(49.2% 0.089 181.2)
-
Step 800
800
#005C51
oklch(42.6% 0.077 181.1)
-
Step 900
900
#004D44
oklch(37.7% 0.068 181.7)
-
Step 950
950
#002E28
oklch(27% 0.049 181.5)
#05C9B3 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) | #BFBCB2 | 0.142 |
| Deuteranopia (no green cones) | #AAACB5 | 0.136 |
| Tritanopia (no blue cones) | #00CDC2 | 0.021 |
| Achromatopsia (no color) | #B3B3B3 | 0.136 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #05C9B3
#05C9B3
oklch(75% 0.134 181.2)
- #F388A8
#F388A8
oklch(75.1% 0.134 1.7)
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 #05C9B3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Topaz #13BBAF ΔE 0.040
- Dark Turquoise #00CED1 ΔE 0.042
- Medium Aquamarine #66CDAA ΔE 0.045
- Medium Turquoise #48D1CC ΔE 0.047
- Emerald #06D6A0 ΔE 0.053
- Greenblue #23C48B ΔE 0.053
- Green Blue #01C08D ΔE 0.053
- Greeny Blue #42B395 ΔE 0.063
Use #05C9B3 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.