#104A3C
Closest named color: Dark Blue Green (#005249). oklch(36.8% 0.063 172.9), rgb(16, 74, 60).
Aa
White text reads best on this color (10.16:1).
About this color
#104A3C is a dark, muted teal or cyan. In OKLCH its lightness is 37%, its chroma 0.063 and its hue 173°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Blue Green (#005249), ΔE 0.028 away. White text reads best on it, at 10.16:1.
| Hue family | Teals and cyans |
| Lightness | dark (37%) |
| Chroma | muted (0.063) |
| Temperature | cool |
| Nearest name | Dark Blue Green (#005249) |
| Black text | 2.06:1 |
| White text | 10.16:1 |
Values
| HEX | #104A3C |
| RGB | rgb(16, 74, 60) |
| HSL | hsl(166, 64%, 18%) |
| OKLCH | oklch(36.8% 0.063 172.9) |
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 #104A3C | 10.16:1 | AAA | Lc -97.4 | Preferred for body text |
| Black text on #104A3C | 2.06:1 | Fails | Lc 10.6 | Not readable |
| #104A3C text on white | 10.16:1 | AAA | Lc 93.3 | Preferred for body text |
| #104A3C text on black | 2.06:1 | Fails | Lc -9.2 | 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
#C9DFD7
oklch(88.5% 0.026 171.9)
-
Step 300
300
#A2CBBE
oklch(80.9% 0.047 173.8)
-
Step 400
400
#6DB09C
oklch(70.6% 0.075 173.1)
-
Step 500
500
#3E9C84
oklch(63% 0.096 173.4)
-
Step 600
600
#08876D
oklch(55.6% 0.106 172.6)
-
Step 700
700
#00725B
oklch(49.2% 0.095 172.3)
-
Step 800
800
#035D4B
oklch(42.7% 0.081 173.4)
-
Step 900
900 (this color)
#104A3C
oklch(36.8% 0.063 172.9)
-
Step 950
950
#0E2D24
oklch(27.1% 0.041 171.3)
#104A3C 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) | #47453B | 0.064 |
| Deuteranopia (no green cones) | #403F3D | 0.063 |
| Tritanopia (no blue cones) | #004B46 | 0.016 |
| Achromatopsia (no color) | #414141 | 0.063 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #104A3C
#104A3C
oklch(36.8% 0.063 172.9)
- #593142
#593142
oklch(36.9% 0.063 353.6)
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 #104A3C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Blue Green #005249 ΔE 0.028
- Dark Teal #014D4E ΔE 0.029
- Evergreen #05472A ΔE 0.030
- Pine Green #0A481E ΔE 0.046
- Dark Slate Gray #2F4F4F ΔE 0.047
- Charcoal #264653 ΔE 0.051
- Deep Teal #00555A ΔE 0.053
- Charcoal Grey #3C4142 ΔE 0.058
Use #104A3C 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.