#05B3BC
Closest named color: Turquoise Blue (#06B1C4). oklch(69.8% 0.118 201.2), rgb(5, 179, 188).
Aa
Black text reads best on this color (8.18:1).
About this color
#05B3BC is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 70%, its chroma 0.118 and its hue 201°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise Blue (#06B1C4), ΔE 0.015 away. Black text reads best on it, at 8.18:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (70%) |
| Chroma | moderately saturated (0.118) |
| Temperature | cool |
| Nearest name | Turquoise Blue (#06B1C4) |
| Black text | 8.18:1 |
| White text | 2.56:1 |
Values
| HEX | #05B3BC |
| RGB | rgb(5, 179, 188) |
| HSL | hsl(183, 95%, 38%) |
| OKLCH | oklch(69.8% 0.118 201.2) |
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 #05B3BC | 2.56:1 | Fails | Lc -54.7 | Large or bold text, headings |
| Black text on #05B3BC | 8.18:1 | AAA | Lc 54.4 | Large or bold text, headings |
| #05B3BC text on white | 2.56:1 | Fails | Lc 49.6 | Large or bold text, headings |
| #05B3BC text on black | 8.18:1 | AAA | Lc -52.4 | Large or bold text, headings |
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
#EEF8F8
oklch(97.2% 0.011 197)
-
Step 100
100
#DAEEF0
oklch(93.5% 0.021 204)
-
Step 200
200
#BBE2E4
oklch(88.6% 0.041 200.3)
-
Step 300
300
#85CFD4
oklch(80.8% 0.074 201.3)
-
Step 400
400 (this color)
#05B3BC
oklch(69.8% 0.118 201.2)
-
Step 500
500
#009CA4
oklch(63% 0.107 201.2)
-
Step 600
600
#00838A
oklch(55.5% 0.094 201.4)
-
Step 700
700
#006E74
oklch(49% 0.083 201.4)
-
Step 800
800
#005A5F
oklch(42.5% 0.072 201.4)
-
Step 900
900
#004B50
oklch(37.6% 0.064 202.5)
-
Step 950
950
#002D30
oklch(27% 0.046 201.8)
#05B3BC 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) | #A4AABD | 0.119 |
| Deuteranopia (no green cones) | #8F9BBD | 0.110 |
| Tritanopia (no blue cones) | #00BAB5 | 0.026 |
| Achromatopsia (no color) | #A2A2A2 | 0.119 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #05B3BC
#05B3BC
oklch(69.8% 0.118 201.2)
- #DE7E7D
#DE7E7D
oklch(69.8% 0.119 21.2)
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 #05B3BC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise Blue #06B1C4 ΔE 0.015
- Light Sea Green #20B2AA ΔE 0.026
- Topaz #13BBAF ΔE 0.035
- Greeny Blue #42B395 ΔE 0.058
- Cadet Blue #5F9EA0 ΔE 0.067
- Greyblue #77A1B5 ΔE 0.075
- Dark Turquoise #00CED1 ΔE 0.076
- Dull Teal #5F9E8F ΔE 0.077
Use #05B3BC 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.