#104D5C
Closest named color: Charcoal (#264653). oklch(39% 0.064 218.6), rgb(16, 77, 92).
Aa
White text reads best on this color (9.38:1).
About this color
#104D5C is a dark, muted teal or cyan. In OKLCH its lightness is 39%, its chroma 0.064 and its hue 219°. Its hue sits on the cool side of the wheel. The nearest named color is Charcoal (#264653), ΔE 0.026 away. White text reads best on it, at 9.38:1.
| Hue family | Teals and cyans |
| Lightness | dark (39%) |
| Chroma | muted (0.064) |
| Temperature | cool |
| Nearest name | Charcoal (#264653) |
| Black text | 2.23:1 |
| White text | 9.38:1 |
Values
| HEX | #104D5C |
| RGB | rgb(16, 77, 92) |
| HSL | hsl(192, 70%, 21%) |
| OKLCH | oklch(39% 0.064 218.6) |
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 #104D5C | 9.38:1 | AAA | Lc -95.7 | Preferred for body text |
| Black text on #104D5C | 2.23:1 | Fails | Lc 12.6 | Not readable |
| #104D5C text on white | 9.38:1 | AAA | Lc 91.4 | Preferred for body text |
| #104D5C text on black | 2.23:1 | Fails | Lc -11.0 | 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
#F1F7F8
oklch(97.2% 0.007 208.8)
-
Step 100
100
#E0ECF0
oklch(93.5% 0.014 219.6)
-
Step 200
200
#C7DEE5
oklch(88.6% 0.026 218)
-
Step 300
300
#9FC9D6
oklch(81% 0.048 218.7)
-
Step 400
400
#66ACC1
oklch(70.6% 0.077 219.2)
-
Step 500
500
#3397B1
oklch(63% 0.098 218.8)
-
Step 600
600
#00819B
oklch(55.7% 0.1 218.5)
-
Step 700
700
#006C82
oklch(49.1% 0.088 218.4)
-
Step 800
800
#00596B
oklch(42.8% 0.077 217.7)
-
Step 900
900 (this color)
#104D5C
oklch(39% 0.064 218.6)
-
Step 950
950
#0A2B34
oklch(27% 0.041 219.4)
#104D5C 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) | #444B5D | 0.055 |
| Deuteranopia (no green cones) | #39435C | 0.048 |
| Tritanopia (no blue cones) | #005252 | 0.028 |
| Achromatopsia (no color) | #464646 | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #104D5C
#104D5C
oklch(39% 0.064 218.6)
- #62392B
#62392B
oklch(39.1% 0.063 39.6)
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 #104D5C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal #264653 ΔE 0.026
- Dark Teal #014D4E ΔE 0.026
- Dark Grey Blue #29465B ΔE 0.028
- Deep Teal #00555A ΔE 0.028
- Dark Slate Gray #2F4F4F ΔE 0.035
- Dark Blue Green #005249 ΔE 0.042
- Petrol #005F6A ΔE 0.057
- Dark Blue Grey #1F3B4D ΔE 0.058
Use #104D5C 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.