#104F5D
Closest named color: Deep Teal (#00555A). oklch(39.6% 0.064 216.6), rgb(16, 79, 93).
Aa
White text reads best on this color (9.13:1).
About this color
#104F5D is a dark, muted teal or cyan. In OKLCH its lightness is 40%, its chroma 0.064 and its hue 217°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Teal (#00555A), ΔE 0.022 away. White text reads best on it, at 9.13:1.
| Hue family | Teals and cyans |
| Lightness | dark (40%) |
| Chroma | muted (0.064) |
| Temperature | cool |
| Nearest name | Deep Teal (#00555A) |
| Black text | 2.29:1 |
| White text | 9.13:1 |
Values
| HEX | #104F5D |
| RGB | rgb(16, 79, 93) |
| HSL | hsl(191, 71%, 21%) |
| OKLCH | oklch(39.6% 0.064 216.6) |
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 #104F5D | 9.13:1 | AAA | Lc -95.1 | Preferred for body text |
| Black text on #104F5D | 2.29:1 | Fails | Lc 13.3 | Not readable |
| #104F5D text on white | 9.13:1 | AAA | Lc 90.7 | Preferred for body text |
| #104F5D text on black | 2.29:1 | Fails | Lc -11.6 | 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
#C6DEE5
oklch(88.5% 0.027 217.2)
-
Step 300
300
#9EC9D5
oklch(80.9% 0.048 216.7)
-
Step 400
400
#65ADC0
oklch(70.8% 0.077 216.7)
-
Step 500
500
#2F98B0
oklch(63.1% 0.099 216.5)
-
Step 600
600
#008199
oklch(55.6% 0.099 216.9)
-
Step 700
700
#006C81
oklch(49% 0.088 217.4)
-
Step 800
800
#00596A
oklch(42.8% 0.076 216.6)
-
Step 900
900 (this color)
#104F5D
oklch(39.6% 0.064 216.6)
-
Step 950
950
#092B33
oklch(26.9% 0.041 216.6)
#104F5D 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) | #464C5E | 0.057 |
| Deuteranopia (no green cones) | #3B455D | 0.050 |
| Tritanopia (no blue cones) | #005453 | 0.028 |
| Achromatopsia (no color) | #484848 | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #104F5D
#104F5D
oklch(39.6% 0.064 216.6)
- #643A2E
#643A2E
oklch(39.6% 0.063 36.7)
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 #104F5D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Teal #00555A ΔE 0.022
- Dark Teal #014D4E ΔE 0.027
- Charcoal #264653 ΔE 0.031
- Dark Grey Blue #29465B ΔE 0.032
- Dark Slate Gray #2F4F4F ΔE 0.033
- Dark Blue Green #005249 ΔE 0.040
- Petrol #005F6A ΔE 0.050
- Deep Sea Blue #015482 ΔE 0.061
Use #104F5D 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.