#156C5E
Closest named color: Dark Aqua (#05696B). oklch(47.9% 0.081 178.9), rgb(21, 108, 94).
Aa
White text reads best on this color (6.29:1).
About this color
#156C5E is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 48%, its chroma 0.081 and its hue 179°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Aqua (#05696B), ΔE 0.026 away. White text reads best on it, at 6.29:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.081) |
| Temperature | cool |
| Nearest name | Dark Aqua (#05696B) |
| Black text | 3.33:1 |
| White text | 6.29:1 |
Values
| HEX | #156C5E |
| RGB | rgb(21, 108, 94) |
| HSL | hsl(170, 67%, 25%) |
| OKLCH | oklch(47.9% 0.081 178.9) |
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 #156C5E | 6.29:1 | AA | Lc -86.1 | Fine for body text |
| Black text on #156C5E | 3.33:1 | AA large text | Lc 23.1 | Dividers and decoration only |
| #156C5E text on white | 6.29:1 | AA | Lc 81.0 | Fine for body text |
| #156C5E text on black | 3.33:1 | AA large text | Lc -20.9 | Dividers and decoration only |
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 700.
-
Step 50
50
#F2F7F5
oklch(97.2% 0.006 170.4)
-
Step 100
100
#E2ECEA
oklch(93.5% 0.011 182.9)
-
Step 200
200
#CBDED9
oklch(88.5% 0.021 178.3)
-
Step 300
300
#A6C9C1
oklch(80.8% 0.039 179.9)
-
Step 400
400
#75AEA1
oklch(70.8% 0.063 178.5)
-
Step 500
500
#4C9A8A
oklch(63.2% 0.081 178.4)
-
Step 600
600
#2A8474
oklch(55.6% 0.087 178.7)
-
Step 700
700 (this color)
#156C5E
oklch(47.9% 0.081 178.9)
-
Step 800
800
#1A5B50
oklch(42.7% 0.067 179.4)
-
Step 900
900
#1D4B42
oklch(37.8% 0.053 178.5)
-
Step 950
950
#122C27
oklch(27.1% 0.034 179.6)
#156C5E 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) | #67655D | 0.085 |
| Deuteranopia (no green cones) | #5C5D5F | 0.081 |
| Tritanopia (no blue cones) | #006E68 | 0.015 |
| Achromatopsia (no color) | #606060 | 0.082 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #156C5E
#156C5E
oklch(47.9% 0.081 178.9)
- #82495C
#82495C
oklch(47.9% 0.081 359.2)
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 #156C5E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Aqua #05696B ΔE 0.026
- Dark Green Blue #1F6357 ΔE 0.027
- Dark Aquamarine #017371 ΔE 0.031
- Deep Turquoise #017374 ΔE 0.035
- Bluegreen #017A79 ΔE 0.051
- Petrol #005F6A ΔE 0.053
- Deep Aqua #08787F ΔE 0.055
- Spruce #0A5F38 ΔE 0.064
Use #156C5E 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.