#104F5B
Closest named color: Deep Teal (#00555A). oklch(39.5% 0.063 213.8), rgb(16, 79, 91).
Aa
White text reads best on this color (9.16:1).
About this color
#104F5B is a dark, muted teal or cyan. In OKLCH its lightness is 40%, its chroma 0.063 and its hue 214°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Teal (#00555A), ΔE 0.021 away. White text reads best on it, at 9.16:1.
| Hue family | Teals and cyans |
| Lightness | dark (40%) |
| Chroma | muted (0.063) |
| Temperature | cool |
| Nearest name | Deep Teal (#00555A) |
| Black text | 2.29:1 |
| White text | 9.16:1 |
Values
| HEX | #104F5B |
| RGB | rgb(16, 79, 91) |
| HSL | hsl(190, 70%, 21%) |
| OKLCH | oklch(39.5% 0.063 213.8) |
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 #104F5B | 9.16:1 | AAA | Lc -95.2 | Preferred for body text |
| Black text on #104F5B | 2.29:1 | Fails | Lc 13.2 | Not readable |
| #104F5B text on white | 9.16:1 | AAA | Lc 90.8 | Preferred for body text |
| #104F5B text on black | 2.29:1 | Fails | Lc -11.5 | 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
#E0ECEF
oklch(93.5% 0.013 214.4)
-
Step 200
200
#C6DEE4
oklch(88.5% 0.027 214.4)
-
Step 300
300
#9EC9D3
oklch(80.8% 0.047 213.5)
-
Step 400
400
#65ADBD
oklch(70.6% 0.076 213.6)
-
Step 500
500
#3098AD
oklch(63% 0.097 214.2)
-
Step 600
600
#008196
oklch(55.5% 0.098 214.4)
-
Step 700
700
#006D7E
oklch(49.1% 0.086 213.3)
-
Step 800
800
#005968
oklch(42.7% 0.075 214.2)
-
Step 900
900 (this color)
#104F5B
oklch(39.5% 0.063 213.8)
-
Step 950
950
#092B32
oklch(26.9% 0.04 214.1)
#104F5B 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) | #464C5C | 0.057 |
| Deuteranopia (no green cones) | #3C455B | 0.051 |
| Tritanopia (no blue cones) | #005453 | 0.025 |
| Achromatopsia (no color) | #484848 | 0.063 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #104F5B
#104F5B
oklch(39.5% 0.063 213.8)
- #643930
#643930
oklch(39.5% 0.064 32.7)
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 #104F5B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Teal #00555A ΔE 0.021
- Dark Teal #014D4E ΔE 0.024
- Charcoal #264653 ΔE 0.030
- Dark Slate Gray #2F4F4F ΔE 0.031
- Dark Grey Blue #29465B ΔE 0.033
- Dark Blue Green #005249 ΔE 0.037
- Petrol #005F6A ΔE 0.051
- Charcoal Grey #3C4142 ΔE 0.061
Use #104F5B 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.