#42655D
Closest named color: Dark Green Blue (#1F6357). oklch(47.7% 0.042 178.4), rgb(66, 101, 93).
Aa
White text reads best on this color (6.45:1).
About this color
#42655D is a medium-dark, muted teal or cyan. In OKLCH its lightness is 48%, its chroma 0.042 and its hue 178°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.036 away. White text reads best on it, at 6.45:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (48%) |
| Chroma | muted (0.042) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 3.25:1 |
| White text | 6.45:1 |
Values
| HEX | #42655D |
| RGB | rgb(66, 101, 93) |
| HSL | hsl(166, 21%, 33%) |
| OKLCH | oklch(47.7% 0.042 178.4) |
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 #42655D | 6.45:1 | AA | Lc -87.1 | Fine for body text |
| Black text on #42655D | 3.25:1 | AA large text | Lc 22.0 | Dividers and decoration only |
| #42655D text on white | 6.45:1 | AA | Lc 82.0 | Fine for body text |
| #42655D text on black | 3.25:1 | AA large text | Lc -19.9 | 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 700.
-
Step 50
50
#F4F6F5
oklch(97.1% 0.002 165.1)
-
Step 100
100
#E6EBEA
oklch(93.6% 0.006 183)
-
Step 200
200
#D2DCD9
oklch(88.6% 0.012 176.3)
-
Step 300
300
#B3C5C1
oklch(80.9% 0.02 181)
-
Step 400
400
#8BA8A1
oklch(70.8% 0.034 179)
-
Step 500
500
#6E928A
oklch(63.1% 0.042 179.7)
-
Step 600
600
#567C73
oklch(55.5% 0.045 178.2)
-
Step 700
700 (this color)
#42655D
oklch(47.7% 0.042 178.4)
-
Step 800
800
#3A564F
oklch(42.9% 0.036 177.2)
-
Step 900
900
#324742
oklch(37.9% 0.028 178.4)
-
Step 950
950
#1D2926
oklch(26.9% 0.017 177.9)
#42655D 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) | #62615D | 0.045 |
| Deuteranopia (no green cones) | #5C5C5E | 0.044 |
| Tritanopia (no blue cones) | #376663 | 0.014 |
| Achromatopsia (no color) | #5E5E5E | 0.043 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #42655D
#42655D
oklch(47.7% 0.042 178.4)
- #71535C
#71535C
oklch(47.7% 0.042 359.1)
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 #42655D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.036
- Slate #516572 ΔE 0.041
- Dark Aqua #05696B ΔE 0.042
- Dark Aquamarine #017371 ΔE 0.052
- Deep Turquoise #017374 ΔE 0.054
- Petrol #005F6A ΔE 0.056
- Dim Gray #696969 ΔE 0.061
- YInMn Blue #415A77 ΔE 0.063
Use #42655D 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.