#51B294
Closest named color: Greeny Blue (#42B395). oklch(69.7% 0.103 170.3), rgb(81, 178, 148).
Aa
Black text reads best on this color (8.14:1).
About this color
#51B294 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 70%, its chroma 0.103 and its hue 170°. Its hue sits on the cool side of the wheel. The nearest named color is Greeny Blue (#42B395), ΔE 0.010 away. Black text reads best on it, at 8.14:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (70%) |
| Chroma | moderately saturated (0.103) |
| Temperature | cool |
| Nearest name | Greeny Blue (#42B395) |
| Black text | 8.14:1 |
| White text | 2.57:1 |
Values
| HEX | #51B294 |
| RGB | rgb(81, 178, 148) |
| HSL | hsl(161, 39%, 51%) |
| OKLCH | oklch(69.7% 0.103 170.3) |
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 #51B294 | 2.57:1 | Fails | Lc -55.3 | Large or bold text, headings |
| Black text on #51B294 | 8.14:1 | AAA | Lc 53.8 | Large or bold text, headings |
| #51B294 text on white | 2.57:1 | Fails | Lc 50.2 | Large or bold text, headings |
| #51B294 text on black | 8.14:1 | AAA | Lc -51.7 | 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 400.
-
Step 50
50
#F0F7F4
oklch(97% 0.008 168.8)
-
Step 100
100
#DEEEE8
oklch(93.6% 0.019 171.5)
-
Step 200
200
#C3E1D6
oklch(88.5% 0.035 171.4)
-
Step 300
300
#97CFBA
oklch(81% 0.065 169.5)
-
Step 400
400 (this color)
#51B294
oklch(69.7% 0.103 170.3)
-
Step 500
500
#00A17E
oklch(63.1% 0.125 170.2)
-
Step 600
600
#00876A
oklch(55.5% 0.109 170.8)
-
Step 700
700
#007258
oklch(49.1% 0.097 169.9)
-
Step 800
800
#005D48
oklch(42.6% 0.084 170.6)
-
Step 900
900
#004E3C
oklch(37.7% 0.074 170.6)
-
Step 950
950
#002F23
oklch(27.2% 0.053 170.5)
#51B294 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) | #ADA793 | 0.105 |
| Deuteranopia (no green cones) | #9F9D96 | 0.101 |
| Tritanopia (no blue cones) | #22B3A9 | 0.035 |
| Achromatopsia (no color) | #A1A1A1 | 0.103 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51B294
#51B294
oklch(69.7% 0.103 170.3)
- #CE82A6
#CE82A6
oklch(69.6% 0.104 350.2)
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 #51B294, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greeny Blue #42B395 ΔE 0.010
- Tea #65AB7C ΔE 0.033
- Light Sea Green #20B2AA ΔE 0.037
- Topaz #13BBAF ΔE 0.041
- Dark Seafoam Green #3EAF76 ΔE 0.045
- Bluey Green #2BB179 ΔE 0.048
- Dusty Green #76A973 ΔE 0.049
- Dark Seafoam #1FB57A ΔE 0.051
Use #51B294 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.