#51BEAC
Closest named color: Topaz (#13BBAF). oklch(73.3% 0.103 180.7), rgb(81, 190, 172).
Aa
Black text reads best on this color (9.31:1).
About this color
#51BEAC is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 73%, its chroma 0.103 and its hue 181°. Its hue sits on the cool side of the wheel. The nearest named color is Topaz (#13BBAF), ΔE 0.029 away. Black text reads best on it, at 9.31:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (73%) |
| Chroma | moderately saturated (0.103) |
| Temperature | cool |
| Nearest name | Topaz (#13BBAF) |
| Black text | 9.31:1 |
| White text | 2.25:1 |
Values
| HEX | #51BEAC |
| RGB | rgb(81, 190, 172) |
| HSL | hsl(170, 46%, 53%) |
| OKLCH | oklch(73.3% 0.103 180.7) |
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 #51BEAC | 2.25:1 | Fails | Lc -49.0 | Large or bold text, headings |
| Black text on #51BEAC | 9.31:1 | AAA | Lc 59.8 | Large or bold text, headings |
| #51BEAC text on white | 2.25:1 | Fails | Lc 44.2 | Non-text elements, placeholder text |
| #51BEAC text on black | 9.31:1 | AAA | Lc -57.9 | 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 400.
-
Step 50
50
#F0F7F6
oklch(97.1% 0.008 186.9)
-
Step 100
100
#DDEEEA
oklch(93.5% 0.019 180.3)
-
Step 200
200
#C1E1DA
oklch(88.5% 0.035 180.8)
-
Step 300
300
#92CFC3
oklch(81% 0.065 181)
-
Step 400
400 (this color)
#51BEAC
oklch(73.3% 0.103 180.7)
-
Step 500
500
#009F8D
oklch(63% 0.114 181)
-
Step 600
600
#008676
oklch(55.6% 0.1 180.5)
-
Step 700
700
#007163
oklch(49.2% 0.089 180.3)
-
Step 800
800
#005C51
oklch(42.6% 0.077 181.1)
-
Step 900
900
#004D43
oklch(37.7% 0.068 180.3)
-
Step 950
950
#002E28
oklch(27% 0.049 181.5)
#51BEAC 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) | #B6B4AB | 0.109 |
| Deuteranopia (no green cones) | #A6A7AE | 0.106 |
| Tritanopia (no blue cones) | #00C1B8 | 0.028 |
| Achromatopsia (no color) | #ADADAD | 0.104 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51BEAC
#51BEAC
oklch(73.3% 0.103 180.7)
- #DF8DA5
#DF8DA5
oklch(73.4% 0.103 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 #51BEAC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Topaz #13BBAF ΔE 0.029
- Greeny Blue #42B395 ΔE 0.043
- Light Sea Green #20B2AA ΔE 0.046
- Medium Aquamarine #66CDAA ΔE 0.049
- Dark Turquoise #00CED1 ΔE 0.058
- Green Blue #01C08D ΔE 0.059
- Medium Turquoise #48D1CC ΔE 0.059
- Pale Teal #82CBB2 ΔE 0.060
Use #51BEAC 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.