#03B8CD
Closest named color: Turquoise Blue (#06B1C4). oklch(71.7% 0.123 209.2), rgb(3, 184, 205).
Aa
Black text reads best on this color (8.74:1).
About this color
#03B8CD is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 72%, its chroma 0.123 and its hue 209°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise Blue (#06B1C4), ΔE 0.021 away. Black text reads best on it, at 8.74:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (72%) |
| Chroma | moderately saturated (0.123) |
| Temperature | cool |
| Nearest name | Turquoise Blue (#06B1C4) |
| Black text | 8.74:1 |
| White text | 2.40:1 |
Values
| HEX | #03B8CD |
| RGB | rgb(3, 184, 205) |
| HSL | hsl(186, 97%, 41%) |
| OKLCH | oklch(71.7% 0.123 209.2) |
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 #03B8CD | 2.40:1 | Fails | Lc -51.6 | Large or bold text, headings |
| Black text on #03B8CD | 8.74:1 | AAA | Lc 57.3 | Large or bold text, headings |
| #03B8CD text on white | 2.40:1 | Fails | Lc 46.7 | Large or bold text, headings |
| #03B8CD text on black | 8.74:1 | AAA | Lc -55.4 | 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
#EEF7F9
oklch(97% 0.01 212.5)
-
Step 100
100
#DAEEF2
oklch(93.6% 0.022 211)
-
Step 200
200
#B9E2E8
oklch(88.6% 0.043 207.3)
-
Step 300
300
#83CFDC
oklch(81% 0.077 209.5)
-
Step 400
400 (this color)
#03B8CD
oklch(71.7% 0.123 209.2)
-
Step 500
500
#009BAD
oklch(63.1% 0.109 209.2)
-
Step 600
600
#008292
oklch(55.6% 0.096 209.8)
-
Step 700
700
#006D7B
oklch(49% 0.085 210.2)
-
Step 800
800
#005A65
oklch(42.8% 0.074 209.1)
-
Step 900
900
#004B54
oklch(37.8% 0.065 208.5)
-
Step 950
950
#002C33
oklch(26.9% 0.047 211.1)
#03B8CD 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) | #A6B1CE | 0.117 |
| Deuteranopia (no green cones) | #8FA0CD | 0.107 |
| Tritanopia (no blue cones) | #00C1BE | 0.039 |
| Achromatopsia (no color) | #A7A7A7 | 0.124 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #03B8CD
#03B8CD
oklch(71.7% 0.123 209.2)
- #E68476
#E68476
oklch(71.6% 0.123 29.1)
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 #03B8CD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise Blue #06B1C4 ΔE 0.021
- Topaz #13BBAF ΔE 0.048
- Light Sea Green #20B2AA ΔE 0.050
- Dark Turquoise #00CED1 ΔE 0.062
- Vivid Sky Blue #4CC9F0 ΔE 0.072
- Deep Sky Blue #00BFFF ΔE 0.073
- Greeny Blue #42B395 ΔE 0.079
- Medium Turquoise #48D1CC ΔE 0.079
Use #03B8CD 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.