#51A593
Closest named color: Dull Teal (#5F9E8F). oklch(66.4% 0.087 177.6), rgb(81, 165, 147).
Aa
Black text reads best on this color (7.15:1).
About this color
#51A593 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 66%, its chroma 0.087 and its hue 178°. Its hue sits on the cool side of the wheel. The nearest named color is Dull Teal (#5F9E8F), ΔE 0.021 away. Black text reads best on it, at 7.15:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (66%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Dull Teal (#5F9E8F) |
| Black text | 7.15:1 |
| White text | 2.93:1 |
Values
| HEX | #51A593 |
| RGB | rgb(81, 165, 147) |
| HSL | hsl(167, 34%, 48%) |
| OKLCH | oklch(66.4% 0.087 177.6) |
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 #51A593 | 2.93:1 | Fails | Lc -61.0 | Content text, not long reading |
| Black text on #51A593 | 7.15:1 | AAA | Lc 48.4 | Large or bold text, headings |
| #51A593 text on white | 2.93:1 | Fails | Lc 55.6 | Large or bold text, headings |
| #51A593 text on black | 7.15:1 | AAA | Lc -46.2 | 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
#F2F7F5
oklch(97.2% 0.006 170.4)
-
Step 100
100
#E2EDEA
oklch(93.7% 0.012 178)
-
Step 200
200
#CADFD9
oklch(88.6% 0.024 176.8)
-
Step 300
300
#A4CAC0
oklch(80.9% 0.043 177.4)
-
Step 400
400
#71AFA0
oklch(70.7% 0.068 177.3)
-
Step 500
500 (this color)
#51A593
oklch(66.4% 0.087 177.6)
-
Step 600
600
#1E8573
oklch(55.6% 0.094 177.8)
-
Step 700
700
#0C7160
oklch(49.2% 0.088 177)
-
Step 800
800
#125C4F
oklch(42.8% 0.072 177.8)
-
Step 900
900
#194B41
oklch(37.6% 0.056 177.6)
-
Step 950
950
#102C26
oklch(26.9% 0.036 177.5)
#51A593 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) | #9F9C92 | 0.091 |
| Deuteranopia (no green cones) | #929394 | 0.086 |
| Tritanopia (no blue cones) | #29A7A0 | 0.027 |
| Achromatopsia (no color) | #979797 | 0.088 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51A593
#51A593
oklch(66.4% 0.087 177.6)
- #BF7D93
#BF7D93
oklch(66.4% 0.086 358.1)
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 #51A593, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Teal #5F9E8F ΔE 0.021
- Grey Teal #5E9B8A ΔE 0.028
- Cadet Blue #5F9EA0 ΔE 0.035
- Persian Green #2A9D8F ΔE 0.038
- Greeny Blue #42B395 ΔE 0.040
- Sea #3C9992 ΔE 0.041
- Light Sea Green #20B2AA ΔE 0.043
- Tea #65AB7C ΔE 0.045
Use #51A593 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.