#15978D
Closest named color: Blue Green (#0F9B8E). oklch(61.1% 0.103 186.4), rgb(21, 151, 141).
Aa
Black text reads best on this color (5.84:1).
About this color
#15978D is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 61%, its chroma 0.103 and its hue 186°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Green (#0F9B8E), ΔE 0.012 away. Black text reads best on it, at 5.84:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (61%) |
| Chroma | moderately saturated (0.103) |
| Temperature | cool |
| Nearest name | Blue Green (#0F9B8E) |
| Black text | 5.84:1 |
| White text | 3.59:1 |
Values
| HEX | #15978D |
| RGB | rgb(21, 151, 141) |
| HSL | hsl(175, 76%, 34%) |
| OKLCH | oklch(61.1% 0.103 186.4) |
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 #15978D | 3.59:1 | AA large text | Lc -68.5 | Content text, not long reading |
| Black text on #15978D | 5.84:1 | AA | Lc 41.0 | Non-text elements, placeholder text |
| #15978D text on white | 3.59:1 | AA large text | Lc 63.0 | Content text, not long reading |
| #15978D text on black | 5.84:1 | AA | Lc -38.6 | Non-text elements, placeholder text |
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
#C5E0DC
oklch(88.6% 0.029 185.9)
-
Step 300
300
#9CCCC6
oklch(81% 0.051 186.7)
-
Step 400
400
#60B1A8
oklch(70.6% 0.081 186.2)
-
Step 500
500 (this color)
#15978D
oklch(61.1% 0.103 186.4)
-
Step 600
600
#00857C
oklch(55.5% 0.097 186.5)
-
Step 700
700
#007068
oklch(49.1% 0.086 186.2)
-
Step 800
800
#005C55
oklch(42.7% 0.075 185.9)
-
Step 900
900
#004D47
oklch(37.8% 0.066 185.9)
-
Step 950
950
#062D2A
oklch(27% 0.042 187.4)
#15978D 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) | #8E8E8D | 0.109 |
| Deuteranopia (no green cones) | #7E828E | 0.103 |
| Tritanopia (no blue cones) | #009B94 | 0.013 |
| Achromatopsia (no color) | #878787 | 0.104 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #15978D
#15978D
oklch(61.1% 0.103 186.4)
- #B76879
#B76879
oklch(61.1% 0.103 6.7)
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 #15978D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Green #0F9B8E ΔE 0.012
- Persian Green #2A9D8F ΔE 0.021
- Teal Green #0A9396 ΔE 0.021
- Sea #3C9992 ΔE 0.022
- Dusty Teal #4C9085 ΔE 0.033
- Dark Cyan #008B8B ΔE 0.037
- Ocean Green #3D9973 ΔE 0.043
- Grey Teal #5E9B8A ΔE 0.050
Use #15978D 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.