#42665A
Closest named color: Dark Green Blue (#1F6357). oklch(47.9% 0.046 171.4), rgb(66, 102, 90).
Aa
White text reads best on this color (6.40:1).
About this color
#42665A is a medium-dark, muted teal or cyan. In OKLCH its lightness is 48%, its chroma 0.046 and its hue 171°. 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 6.40:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (48%) |
| Chroma | muted (0.046) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 3.27:1 |
| White text | 6.40:1 |
Values
| HEX | #42665A |
| RGB | rgb(66, 102, 90) |
| HSL | hsl(160, 21%, 33%) |
| OKLCH | oklch(47.9% 0.046 171.4) |
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 #42665A | 6.40:1 | AA | Lc -86.9 | Fine for body text |
| Black text on #42665A | 3.27:1 | AA large text | Lc 22.3 | Dividers and decoration only |
| #42665A text on white | 6.40:1 | AA | Lc 81.8 | Fine for body text |
| #42665A text on black | 3.27:1 | AA large text | Lc -20.1 | 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 700.
-
Step 50
50
#F3F6F5
oklch(97.1% 0.003 174.5)
-
Step 100
100
#E6EBE9
oklch(93.6% 0.006 170.4)
-
Step 200
200
#D2DCD8
oklch(88.6% 0.012 170.2)
-
Step 300
300
#B3C6BF
oklch(81% 0.023 171.6)
-
Step 400
400
#8BA89E
oklch(70.7% 0.035 172.3)
-
Step 500
500
#6E9386
oklch(63.2% 0.046 171.2)
-
Step 600
600
#557D70
oklch(55.6% 0.049 172.2)
-
Step 700
700 (this color)
#42665A
oklch(47.9% 0.046 171.4)
-
Step 800
800
#39564C
oklch(42.7% 0.039 170.9)
-
Step 900
900
#324740
oklch(37.8% 0.029 172.1)
-
Step 950
950
#1D2A25
oklch(27.1% 0.02 169.2)
#42665A 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) | #646259 | 0.047 |
| Deuteranopia (no green cones) | #5E5D5B | 0.046 |
| Tritanopia (no blue cones) | #386762 | 0.015 |
| Achromatopsia (no color) | #5F5F5F | 0.046 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #42665A
#42665A
oklch(47.9% 0.046 171.4)
- #725360
#725360
oklch(47.9% 0.045 352)
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 #42665A, 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
- Dark Aqua #05696B ΔE 0.043
- Slate #516572 ΔE 0.047
- Dark Aquamarine #017371 ΔE 0.052
- Deep Turquoise #017374 ΔE 0.054
- Petrol #005F6A ΔE 0.060
- Dim Gray #696969 ΔE 0.062
- Dark Moss Green #606C38 ΔE 0.066
Use #42665A 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.