#105C55
Closest named color: Dark Green Blue (#1F6357). oklch(43% 0.07 185.5), rgb(16, 92, 85).
Aa
White text reads best on this color (7.82:1).
About this color
#105C55 is a dark, moderately saturated teal or cyan. In OKLCH its lightness is 43%, its chroma 0.070 and its hue 185°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.025 away. White text reads best on it, at 7.82:1.
| Hue family | Teals and cyans |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.070) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 2.68:1 |
| White text | 7.82:1 |
Values
| HEX | #105C55 |
| RGB | rgb(16, 92, 85) |
| HSL | hsl(174, 70%, 21%) |
| OKLCH | oklch(43% 0.07 185.5) |
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 #105C55 | 7.82:1 | AAA | Lc -91.6 | Preferred for body text |
| Black text on #105C55 | 2.68:1 | Fails | Lc 17.2 | Dividers and decoration only |
| #105C55 text on white | 7.82:1 | AAA | Lc 86.8 | Fine for body text |
| #105C55 text on black | 2.68:1 | Fails | Lc -15.3 | Dividers and decoration only |
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 800.
-
Step 50
50
#F2F7F6
oklch(97.2% 0.005 183)
-
Step 100
100
#E2EDEB
oklch(93.7% 0.012 184.1)
-
Step 200
200
#C9DEDB
oklch(88.4% 0.023 186.4)
-
Step 300
300
#A4CAC4
oklch(81% 0.041 184.7)
-
Step 400
400
#70AEA6
oklch(70.6% 0.065 185.6)
-
Step 500
500
#449A90
oklch(63.1% 0.084 185.1)
-
Step 600
600
#1B847B
oklch(55.5% 0.091 186.1)
-
Step 700
700
#067067
oklch(49.1% 0.085 185.1)
-
Step 800
800 (this color)
#105C55
oklch(43% 0.07 185.5)
-
Step 900
900
#174B46
oklch(37.7% 0.055 186.2)
-
Step 950
950
#102C29
oklch(27% 0.034 186.1)
#105C55 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) | #575655 | 0.075 |
| Deuteranopia (no green cones) | #4D4F56 | 0.071 |
| Tritanopia (no blue cones) | #005E5A | 0.009 |
| Achromatopsia (no color) | #525252 | 0.071 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #105C55
#105C55
oklch(43% 0.07 185.5)
- #703F4A
#703F4A
oklch(43% 0.07 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 #105C55, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.025
- Deep Teal #00555A ΔE 0.028
- Petrol #005F6A ΔE 0.033
- Dark Blue Green #005249 ΔE 0.036
- Dark Slate Gray #2F4F4F ΔE 0.043
- Dark Aqua #05696B ΔE 0.047
- Dark Teal #014D4E ΔE 0.051
- Spruce #0A5F38 ΔE 0.051
Use #105C55 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.