#104D40
Closest named color: Dark Blue Green (#005249). oklch(37.9% 0.064 175), rgb(16, 77, 64).
Aa
White text reads best on this color (9.73:1).
About this color
#104D40 is a dark, muted teal or cyan. In OKLCH its lightness is 38%, its chroma 0.064 and its hue 175°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Blue Green (#005249), ΔE 0.018 away. White text reads best on it, at 9.73:1.
| Hue family | Teals and cyans |
| Lightness | dark (38%) |
| Chroma | muted (0.064) |
| Temperature | cool |
| Nearest name | Dark Blue Green (#005249) |
| Black text | 2.15:1 |
| White text | 9.73:1 |
Values
| HEX | #104D40 |
| RGB | rgb(16, 77, 64) |
| HSL | hsl(167, 66%, 18%) |
| OKLCH | oklch(37.9% 0.064 175) |
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 #104D40 | 9.73:1 | AAA | Lc -96.5 | Preferred for body text |
| Black text on #104D40 | 2.15:1 | Fails | Lc 11.7 | Not readable |
| #104D40 text on white | 9.73:1 | AAA | Lc 92.3 | Preferred for body text |
| #104D40 text on black | 2.15:1 | Fails | Lc -10.2 | Not readable |
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 900.
-
Step 50
50
#F1F7F5
oklch(97.1% 0.007 174.4)
-
Step 100
100
#E1EDE9
oklch(93.6% 0.014 174.2)
-
Step 200
200
#C8DFD8
oklch(88.5% 0.026 175.5)
-
Step 300
300
#A1CBBF
oklch(80.9% 0.048 175.7)
-
Step 400
400
#6AB19E
oklch(70.8% 0.077 175)
-
Step 500
500
#399D86
oklch(63.1% 0.099 174.9)
-
Step 600
600
#008770
oklch(55.7% 0.105 175.1)
-
Step 700
700
#00715E
oklch(49% 0.092 175.6)
-
Step 800
800
#005D4C
oklch(42.7% 0.081 174.6)
-
Step 900
900 (this color)
#104D40
oklch(37.9% 0.064 175)
-
Step 950
950
#0C2D25
oklch(27% 0.041 174.3)
#104D40 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) | #4A483F | 0.067 |
| Deuteranopia (no green cones) | #424241 | 0.064 |
| Tritanopia (no blue cones) | #004E49 | 0.015 |
| Achromatopsia (no color) | #444444 | 0.065 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #104D40
#104D40
oklch(37.9% 0.064 175)
- #5D3344
#5D3344
oklch(38% 0.065 354.9)
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 #104D40, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Blue Green #005249 ΔE 0.018
- Dark Teal #014D4E ΔE 0.024
- Evergreen #05472A ΔE 0.038
- Dark Slate Gray #2F4F4F ΔE 0.040
- Deep Teal #00555A ΔE 0.044
- Charcoal #264653 ΔE 0.050
- Pine Green #0A481E ΔE 0.051
- Charcoal Grey #3C4142 ΔE 0.059
Use #104D40 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.