#04CFA5
Closest named color: Emerald (#06D6A0). oklch(76.1% 0.148 171.2), rgb(4, 207, 165).
Aa
Black text reads best on this color (10.47:1).
About this color
#04CFA5 is a medium-light, vivid teal or cyan. In OKLCH its lightness is 76%, its chroma 0.148 and its hue 171°. Its hue sits on the cool side of the wheel. The nearest named color is Emerald (#06D6A0), ΔE 0.024 away. Black text reads best on it, at 10.47:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (76%) |
| Chroma | vivid (0.148) |
| Temperature | cool |
| Nearest name | Emerald (#06D6A0) |
| Black text | 10.47:1 |
| White text | 2.00:1 |
Values
| HEX | #04CFA5 |
| RGB | rgb(4, 207, 165) |
| HSL | hsl(168, 96%, 41%) |
| OKLCH | oklch(76.1% 0.148 171.2) |
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 #04CFA5 | 2.00:1 | Fails | Lc -42.6 | Non-text elements, placeholder text |
| Black text on #04CFA5 | 10.47:1 | AAA | Lc 65.7 | Content text, not long reading |
| #04CFA5 text on white | 2.00:1 | Fails | Lc 38.2 | Non-text elements, placeholder text |
| #04CFA5 text on black | 10.47:1 | AAA | Lc -64.2 | 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 300.
-
Step 50
50
#E9FAF4
oklch(97.1% 0.02 172.8)
-
Step 100
100
#CEF4E6
oklch(93.6% 0.044 171)
-
Step 200
200
#A0EBD2
oklch(88.4% 0.082 171.5)
-
Step 300
300 (this color)
#04CFA5
oklch(76.1% 0.148 171.2)
-
Step 400
400
#00BC95
oklch(70.8% 0.139 170.9)
-
Step 500
500
#00A180
oklch(63.1% 0.123 171.4)
-
Step 600
600
#00876B
oklch(55.5% 0.108 171.4)
-
Step 700
700
#007259
oklch(49.1% 0.097 170.7)
-
Step 800
800
#005D49
oklch(42.6% 0.083 171.6)
-
Step 900
900
#004E3C
oklch(37.7% 0.074 170.6)
-
Step 950
950
#002F23
oklch(27.2% 0.053 170.5)
#04CFA5 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) | #C8C0A3 | 0.152 |
| Deuteranopia (no green cones) | #B3B1A8 | 0.145 |
| Tritanopia (no blue cones) | #00D1C3 | 0.042 |
| Achromatopsia (no color) | #B7B7B7 | 0.149 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #04CFA5
#04CFA5
oklch(76.1% 0.148 171.2)
- #F787BD
#F787BD
oklch(76.1% 0.149 350.9)
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 #04CFA5, closest first.
No curated palette has a color within ΔE 0.04 of #04CFA5.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Emerald #06D6A0 ΔE 0.024
- Greenblue #23C48B ΔE 0.039
- Medium Aquamarine #66CDAA ΔE 0.042
- Green Blue #01C08D ΔE 0.047
- Seaweed #18D17B ΔE 0.058
- Medium Turquoise #48D1CC ΔE 0.062
- Aqua Green #12E193 ΔE 0.064
- Seafoam Blue #78D1B6 ΔE 0.064
Use #04CFA5 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.