#31A699
Closest named color: Persian Green (#2A9D8F). oklch(65.8% 0.103 184.3), rgb(49, 166, 153).
Aa
Black text reads best on this color (7.04:1).
About this color
#31A699 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 66%, its chroma 0.103 and its hue 184°. Its hue sits on the cool side of the wheel. The nearest named color is Persian Green (#2A9D8F), ΔE 0.028 away. Black text reads best on it, at 7.04:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (66%) |
| Chroma | moderately saturated (0.103) |
| Temperature | cool |
| Nearest name | Persian Green (#2A9D8F) |
| Black text | 7.04:1 |
| White text | 2.98:1 |
Values
| HEX | #31A699 |
| RGB | rgb(49, 166, 153) |
| HSL | hsl(173, 54%, 42%) |
| OKLCH | oklch(65.8% 0.103 184.3) |
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 #31A699 | 2.98:1 | Fails | Lc -61.4 | Content text, not long reading |
| Black text on #31A699 | 7.04:1 | AAA | Lc 48.0 | Large or bold text, headings |
| #31A699 text on white | 2.98:1 | Fails | Lc 56.1 | Large or bold text, headings |
| #31A699 text on black | 7.04:1 | AAA | Lc -45.7 | 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
#F1F7F6
oklch(97.1% 0.006 185.3)
-
Step 100
100
#E0EDEB
oklch(93.6% 0.014 185.9)
-
Step 200
200
#C6E0DB
oklch(88.6% 0.028 182.8)
-
Step 300
300
#9DCCC4
oklch(81% 0.051 183.5)
-
Step 400
400
#61B1A6
oklch(70.6% 0.081 184.1)
-
Step 500
500 (this color)
#31A699
oklch(65.8% 0.103 184.3)
-
Step 600
600
#00867A
oklch(55.7% 0.099 183.9)
-
Step 700
700
#007066
oklch(49% 0.087 184.2)
-
Step 800
800
#005C54
oklch(42.7% 0.075 184.7)
-
Step 900
900
#004D46
oklch(37.8% 0.067 184.5)
-
Step 950
950
#072D29
oklch(27% 0.042 184.9)
#31A699 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) | #9E9D99 | 0.110 |
| Deuteranopia (no green cones) | #8D909A | 0.104 |
| Tritanopia (no blue cones) | #00AAA2 | 0.017 |
| Achromatopsia (no color) | #959595 | 0.104 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #31A699
#31A699
oklch(65.8% 0.103 184.3)
- #C6768A
#C6768A
oklch(65.8% 0.103 4.1)
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 #31A699, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Persian Green #2A9D8F ΔE 0.028
- Light Sea Green #20B2AA ΔE 0.036
- Dull Teal #5F9E8F ΔE 0.036
- Sea #3C9992 ΔE 0.036
- Blue Green #0F9B8E ΔE 0.038
- Grey Teal #5E9B8A ΔE 0.040
- Cadet Blue #5F9EA0 ΔE 0.043
- Greeny Blue #42B395 ΔE 0.043
Use #31A699 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.