#4FA1B3
Closest named color: Cadet Blue (#5F9EA0). oklch(66.5% 0.084 214), rgb(79, 161, 179).
Aa
Black text reads best on this color (7.08:1).
About this color
#4FA1B3 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 66%, its chroma 0.084 and its hue 214°. Its hue sits on the cool side of the wheel. The nearest named color is Cadet Blue (#5F9EA0), ΔE 0.028 away. Black text reads best on it, at 7.08:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (66%) |
| Chroma | moderately saturated (0.084) |
| Temperature | cool |
| Nearest name | Cadet Blue (#5F9EA0) |
| Black text | 7.08:1 |
| White text | 2.96:1 |
Values
| HEX | #4FA1B3 |
| RGB | rgb(79, 161, 179) |
| HSL | hsl(191, 40%, 51%) |
| OKLCH | oklch(66.5% 0.084 214) |
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 #4FA1B3 | 2.96:1 | Fails | Lc -61.4 | Content text, not long reading |
| Black text on #4FA1B3 | 7.08:1 | AAA | Lc 48.0 | Large or bold text, headings |
| #4FA1B3 text on white | 2.96:1 | Fails | Lc 56.0 | Large or bold text, headings |
| #4FA1B3 text on black | 7.08:1 | AAA | Lc -45.8 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E1ECEF
oklch(93.6% 0.012 215.8)
-
Step 200
200
#C9DDE2
oklch(88.4% 0.022 214.4)
-
Step 300
300
#A3C8D1
oklch(80.9% 0.041 214.2)
-
Step 400
400
#6FACBA
oklch(70.8% 0.066 213.8)
-
Step 500
500 (this color)
#4FA1B3
oklch(66.5% 0.084 214)
-
Step 600
600
#1B8194
oklch(55.7% 0.091 213.9)
-
Step 700
700
#076D7E
oklch(49.2% 0.085 213.6)
-
Step 800
800
#0F5966
oklch(42.8% 0.07 212.9)
-
Step 900
900
#174953
oklch(37.7% 0.055 213.4)
-
Step 950
950
#102B31
oklch(27.1% 0.034 214.3)
#4FA1B3 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) | #949CB4 | 0.077 |
| Deuteranopia (no green cones) | #8591B3 | 0.070 |
| Tritanopia (no blue cones) | #00A8A6 | 0.046 |
| Achromatopsia (no color) | #969696 | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4FA1B3
#4FA1B3
oklch(66.5% 0.084 214)
- #C18171
#C18171
oklch(66.5% 0.083 34.7)
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 #4FA1B3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cadet Blue #5F9EA0 ΔE 0.028
- Greyblue #77A1B5 ΔE 0.040
- Turquoise Blue #06B1C4 ΔE 0.048
- Dull Teal #5F9E8F ΔE 0.052
- Sea #3C9992 ΔE 0.054
- Bluegrey #85A3B2 ΔE 0.057
- Grey Teal #5E9B8A ΔE 0.058
- Light Sea Green #20B2AA ΔE 0.059
Use #4FA1B3 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.