#51ABBC
Closest named color: Turquoise Blue (#06B1C4). oklch(69.3% 0.089 211.7), rgb(81, 171, 188).
Aa
Black text reads best on this color (7.90:1).
About this color
#51ABBC is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 69%, its chroma 0.089 and its hue 212°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise Blue (#06B1C4), ΔE 0.031 away. Black text reads best on it, at 7.90:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (69%) |
| Chroma | moderately saturated (0.089) |
| Temperature | cool |
| Nearest name | Turquoise Blue (#06B1C4) |
| Black text | 7.90:1 |
| White text | 2.65:1 |
Values
| HEX | #51ABBC |
| RGB | rgb(81, 171, 188) |
| HSL | hsl(190, 44%, 53%) |
| OKLCH | oklch(69.3% 0.089 211.7) |
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 #51ABBC | 2.65:1 | Fails | Lc -56.7 | Large or bold text, headings |
| Black text on #51ABBC | 7.90:1 | AAA | Lc 52.5 | Large or bold text, headings |
| #51ABBC text on white | 2.65:1 | Fails | Lc 51.5 | Large or bold text, headings |
| #51ABBC text on black | 7.90:1 | AAA | Lc -50.4 | 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
#F0F7F8
oklch(97.1% 0.008 207.1)
-
Step 100
100
#DEEDF0
oklch(93.6% 0.016 211)
-
Step 200
200
#C3DFE5
oklch(88.5% 0.031 212.1)
-
Step 300
300
#97CBD5
oklch(80.9% 0.056 210.7)
-
Step 400
400 (this color)
#51ABBC
oklch(69.3% 0.089 211.7)
-
Step 500
500
#009AB0
oklch(63% 0.11 212.4)
-
Step 600
600
#008294
oklch(55.7% 0.097 211.6)
-
Step 700
700
#006D7D
oklch(49.1% 0.086 212.3)
-
Step 800
800
#005966
oklch(42.6% 0.074 211.8)
-
Step 900
900
#004A56
oklch(37.6% 0.066 213)
-
Step 950
950
#002C34
oklch(26.9% 0.047 213.2)
#51ABBC 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) | #9DA6BD | 0.082 |
| Deuteranopia (no green cones) | #8D99BC | 0.076 |
| Tritanopia (no blue cones) | #00B2B0 | 0.044 |
| Achromatopsia (no color) | #9F9F9F | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51ABBC
#51ABBC
oklch(69.3% 0.089 211.7)
- #CD887A
#CD887A
oklch(69.3% 0.088 32)
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 #51ABBC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise Blue #06B1C4 ΔE 0.031
- Greyblue #77A1B5 ΔE 0.041
- Cadet Blue #5F9EA0 ΔE 0.046
- Light Sea Green #20B2AA ΔE 0.047
- Bluegrey #85A3B2 ΔE 0.053
- Bluey Grey #89A0B0 ΔE 0.060
- Topaz #13BBAF ΔE 0.060
- Dull Teal #5F9E8F ΔE 0.065
Use #51ABBC 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.