#4FA3A3
Closest named color: Cadet Blue (#5F9EA0). oklch(66.4% 0.081 195.4), rgb(79, 163, 163).
Aa
Black text reads best on this color (7.10:1).
About this color
#4FA3A3 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 66%, its chroma 0.081 and its hue 195°. Its hue sits on the cool side of the wheel. The nearest named color is Cadet Blue (#5F9EA0), ΔE 0.018 away. Black text reads best on it, at 7.10:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (66%) |
| Chroma | moderately saturated (0.081) |
| Temperature | cool |
| Nearest name | Cadet Blue (#5F9EA0) |
| Black text | 7.10:1 |
| White text | 2.95:1 |
Values
| HEX | #4FA3A3 |
| RGB | rgb(79, 163, 163) |
| HSL | hsl(180, 35%, 47%) |
| OKLCH | oklch(66.4% 0.081 195.4) |
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 #4FA3A3 | 2.95:1 | Fails | Lc -61.3 | Content text, not long reading |
| Black text on #4FA3A3 | 7.10:1 | AAA | Lc 48.1 | Large or bold text, headings |
| #4FA3A3 text on white | 2.95:1 | Fails | Lc 55.9 | Large or bold text, headings |
| #4FA3A3 text on black | 7.10:1 | AAA | Lc -45.9 | 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 500.
-
Step 50
50
#F2F7F6
oklch(97.2% 0.005 183)
-
Step 100
100
#E2ECEC
oklch(93.6% 0.011 197)
-
Step 200
200
#C9DEDE
oklch(88.5% 0.022 196.8)
-
Step 300
300
#A4C9C9
oklch(80.9% 0.039 196.4)
-
Step 400
400
#70ADAD
oklch(70.6% 0.063 195.8)
-
Step 500
500 (this color)
#4FA3A3
oklch(66.4% 0.081 195.4)
-
Step 600
600
#1B8384
oklch(55.6% 0.088 195.9)
-
Step 700
700
#066F6F
oklch(49.1% 0.082 194.8)
-
Step 800
800
#0F5A5B
oklch(42.6% 0.068 196.3)
-
Step 900
900
#174A4A
oklch(37.6% 0.053 195.1)
-
Step 950
950
#102C2C
oklch(27.2% 0.034 195.3)
#4FA3A3 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) | #9A9CA3 | 0.085 |
| Deuteranopia (no green cones) | #8C92A4 | 0.079 |
| Tritanopia (no blue cones) | #0EA7A3 | 0.031 |
| Achromatopsia (no color) | #969696 | 0.082 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4FA3A3
#4FA3A3
oklch(66.4% 0.081 195.4)
- #C07F83
#C07F83
oklch(66.4% 0.081 15.5)
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 #4FA3A3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cadet Blue #5F9EA0 ΔE 0.018
- Dull Teal #5F9E8F ΔE 0.029
- Grey Teal #5E9B8A ΔE 0.037
- Sea #3C9992 ΔE 0.039
- Persian Green #2A9D8F ΔE 0.043
- Light Sea Green #20B2AA ΔE 0.044
- Greyblue #77A1B5 ΔE 0.052
- Blue Green #0F9B8E ΔE 0.053
Use #4FA3A3 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.