#03BCB5
Closest named color: Topaz (#13BBAF). oklch(71.8% 0.124 190), rgb(3, 188, 181).
Aa
Black text reads best on this color (8.86:1).
About this color
#03BCB5 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 72%, its chroma 0.124 and its hue 190°. Its hue sits on the cool side of the wheel. The nearest named color is Topaz (#13BBAF), ΔE 0.008 away. Black text reads best on it, at 8.86:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (72%) |
| Chroma | moderately saturated (0.124) |
| Temperature | cool |
| Nearest name | Topaz (#13BBAF) |
| Black text | 8.86:1 |
| White text | 2.36:1 |
Values
| HEX | #03BCB5 |
| RGB | rgb(3, 188, 181) |
| HSL | hsl(178, 97%, 37%) |
| OKLCH | oklch(71.8% 0.124 190) |
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 #03BCB5 | 2.36:1 | Fails | Lc -51.0 | Large or bold text, headings |
| Black text on #03BCB5 | 8.86:1 | AAA | Lc 57.9 | Large or bold text, headings |
| #03BCB5 text on white | 2.36:1 | Fails | Lc 46.0 | Large or bold text, headings |
| #03BCB5 text on black | 8.86:1 | AAA | Lc -56.0 | 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
#EEF8F7
oklch(97.1% 0.011 189.8)
-
Step 100
100
#DAEFED
oklch(93.6% 0.022 189.9)
-
Step 200
200
#BAE3DF
oklch(88.6% 0.043 189.1)
-
Step 300
300
#83D1CC
oklch(80.9% 0.077 190.5)
-
Step 400
400 (this color)
#03BCB5
oklch(71.8% 0.124 190)
-
Step 500
500
#009E98
oklch(63.1% 0.109 190)
-
Step 600
600
#008580
oklch(55.7% 0.096 190.1)
-
Step 700
700
#00706B
oklch(49.2% 0.085 189.4)
-
Step 800
800
#005C58
oklch(42.8% 0.074 189.6)
-
Step 900
900
#004C49
oklch(37.6% 0.065 190.2)
-
Step 950
950
#002E2B
oklch(27.1% 0.047 188)
#03BCB5 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) | #B0B1B5 | 0.131 |
| Deuteranopia (no green cones) | #9BA2B6 | 0.122 |
| Tritanopia (no blue cones) | #00C1BA | 0.014 |
| Achromatopsia (no color) | #A8A8A8 | 0.124 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #03BCB5
#03BCB5
oklch(71.8% 0.124 190)
- #E58192
#E58192
oklch(71.6% 0.124 9.8)
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 #03BCB5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Topaz #13BBAF ΔE 0.008
- Light Sea Green #20B2AA ΔE 0.028
- Turquoise Blue #06B1C4 ΔE 0.045
- Greeny Blue #42B395 ΔE 0.045
- Dark Turquoise #00CED1 ΔE 0.057
- Green Blue #01C08D ΔE 0.063
- Medium Turquoise #48D1CC ΔE 0.070
- Greenblue #23C48B ΔE 0.071
Use #03BCB5 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.