#166459
Closest named color: Dark Green Blue (#1F6357). oklch(45.5% 0.075 181.1), rgb(22, 100, 89).
Aa
White text reads best on this color (6.99:1).
About this color
#166459 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 45%, its chroma 0.075 and its hue 181°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.005 away. White text reads best on it, at 6.99:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (45%) |
| Chroma | moderately saturated (0.075) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 3.00:1 |
| White text | 6.99:1 |
Values
| HEX | #166459 |
| RGB | rgb(22, 100, 89) |
| HSL | hsl(172, 64%, 24%) |
| OKLCH | oklch(45.5% 0.075 181.1) |
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 #166459 | 6.99:1 | AA | Lc -88.9 | Fine for body text |
| Black text on #166459 | 3.00:1 | AA large text | Lc 20.1 | Dividers and decoration only |
| #166459 text on white | 6.99:1 | AA | Lc 83.9 | Fine for body text |
| #166459 text on black | 3.00:1 | AA large text | Lc -18.1 | 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
#F1F7F6
oklch(97.1% 0.006 185.3)
-
Step 100
100
#E1EDEA
oklch(93.6% 0.013 179.5)
-
Step 200
200
#C9DFDA
oklch(88.6% 0.024 180.6)
-
Step 300
300
#A3CAC2
oklch(80.9% 0.043 181.3)
-
Step 400
400
#6EAFA3
oklch(70.7% 0.069 181.2)
-
Step 500
500
#409B8D
oklch(63.1% 0.089 181.6)
-
Step 600
600
#108577
oklch(55.5% 0.096 181.8)
-
Step 700
700
#007164
oklch(49.2% 0.089 181.2)
-
Step 800
800 (this color)
#166459
oklch(45.5% 0.075 181.1)
-
Step 900
900
#154C43
oklch(37.8% 0.059 180)
-
Step 950
950
#0E2C27
oklch(26.9% 0.037 180.8)
#166459 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) | #5F5E59 | 0.079 |
| Deuteranopia (no green cones) | #55565A | 0.075 |
| Tritanopia (no blue cones) | #006661 | 0.013 |
| Achromatopsia (no color) | #595959 | 0.075 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #166459
#166459
oklch(45.5% 0.075 181.1)
- #794454
#794454
oklch(45.5% 0.076 1.1)
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 #166459, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.005
- Dark Aqua #05696B ΔE 0.028
- Petrol #005F6A ΔE 0.037
- Spruce #0A5F38 ΔE 0.051
- Dark Aquamarine #017371 ΔE 0.051
- Pine #2B5D34 ΔE 0.053
- Deep Teal #00555A ΔE 0.053
- Deep Turquoise #017374 ΔE 0.054
Use #166459 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.