#03C9C3
Closest named color: Dark Turquoise (#00CED1). oklch(75.5% 0.13 191), rgb(3, 201, 195).
Aa
Black text reads best on this color (10.14:1).
About this color
#03C9C3 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 75%, its chroma 0.130 and its hue 191°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Turquoise (#00CED1), ΔE 0.021 away. Black text reads best on it, at 10.14:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (75%) |
| Chroma | moderately saturated (0.130) |
| Temperature | cool |
| Nearest name | Dark Turquoise (#00CED1) |
| Black text | 10.14:1 |
| White text | 2.06:1 |
Values
| HEX | #03C9C3 |
| RGB | rgb(3, 201, 195) |
| HSL | hsl(178, 97%, 40%) |
| OKLCH | oklch(75.5% 0.13 191) |
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 #03C9C3 | 2.06:1 | Fails | Lc -44.3 | Non-text elements, placeholder text |
| Black text on #03C9C3 | 10.14:1 | AAA | Lc 64.2 | Content text, not long reading |
| #03C9C3 text on white | 2.06:1 | Fails | Lc 39.7 | Non-text elements, placeholder text |
| #03C9C3 text on black | 10.14:1 | AAA | Lc -62.6 | 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
#EEF8F7
oklch(97.1% 0.011 189.8)
-
Step 100
100
#D9EFED
oklch(93.5% 0.023 190.2)
-
Step 200
200
#B8E3E0
oklch(88.5% 0.045 191.1)
-
Step 300
300
#7FD2CD
oklch(81% 0.082 190.7)
-
Step 400
400 (this color)
#03C9C3
oklch(75.5% 0.13 191)
-
Step 500
500
#009E99
oklch(63.1% 0.109 190.8)
-
Step 600
600
#008581
oklch(55.7% 0.096 191.1)
-
Step 700
700
#00706C
oklch(49.2% 0.085 190.4)
-
Step 800
800
#005B59
oklch(42.6% 0.073 192.2)
-
Step 900
900
#004C4A
oklch(37.6% 0.065 191.7)
-
Step 950
950
#002D2C
oklch(26.9% 0.046 192.5)
#03C9C3 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) | #BCBEC3 | 0.136 |
| Deuteranopia (no green cones) | #A5ADC4 | 0.128 |
| Tritanopia (no blue cones) | #00CFC7 | 0.017 |
| Achromatopsia (no color) | #B4B4B4 | 0.131 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #03C9C3
#03C9C3
oklch(75.5% 0.13 191)
- #F58B9B
#F58B9B
oklch(75.4% 0.129 11)
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 #03C9C3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Turquoise #00CED1 ΔE 0.021
- Medium Turquoise #48D1CC ΔE 0.035
- Topaz #13BBAF ΔE 0.042
- Medium Aquamarine #66CDAA ΔE 0.054
- Aqua Blue #02D8E9 ΔE 0.060
- Seafoam Blue #78D1B6 ΔE 0.066
- Light Sea Green #20B2AA ΔE 0.066
- Pale Teal #82CBB2 ΔE 0.068
Use #03C9C3 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.