#40675E
Closest named color: Dark Green Blue (#1F6357). oklch(48.2% 0.047 178), rgb(64, 103, 94).
Aa
White text reads best on this color (6.32:1).
About this color
#40675E is a medium-dark, muted teal or cyan. In OKLCH its lightness is 48%, its chroma 0.047 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 6.32:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (48%) |
| Chroma | muted (0.047) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 3.31:1 |
| White text | 6.32:1 |
Values
| HEX | #40675E |
| RGB | rgb(64, 103, 94) |
| HSL | hsl(166, 23%, 33%) |
| OKLCH | oklch(48.2% 0.047 178) |
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 #40675E | 6.32:1 | AA | Lc -86.5 | Fine for body text |
| Black text on #40675E | 3.31:1 | AA large text | Lc 22.6 | Dividers and decoration only |
| #40675E text on white | 6.32:1 | AA | Lc 81.4 | Fine for body text |
| #40675E text on black | 3.31:1 | AA large text | Lc -20.5 | 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
#E5EBEA
oklch(93.5% 0.007 185.3)
-
Step 200
200
#D1DCD9
oklch(88.5% 0.013 178)
-
Step 300
300
#B2C6C0
oklch(81% 0.023 175.8)
-
Step 400
400
#89A8A0
oklch(70.6% 0.036 177.8)
-
Step 500
500
#6B9389
oklch(63.1% 0.047 177.5)
-
Step 600
600
#527D73
oklch(55.5% 0.05 178.1)
-
Step 700
700 (this color)
#40675E
oklch(48.2% 0.047 178)
-
Step 800
800
#37564F
oklch(42.7% 0.039 178.6)
-
Step 900
900
#304741
oklch(37.7% 0.03 176.6)
-
Step 950
950
#1C2A26
oklch(27.1% 0.02 175.1)
#40675E 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) | #64635E | 0.049 |
| Deuteranopia (no green cones) | #5D5E5F | 0.046 |
| Tritanopia (no blue cones) | #346864 | 0.014 |
| Achromatopsia (no color) | #606060 | 0.047 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40675E
#40675E
oklch(48.2% 0.047 178)
- #74535E
#74535E
oklch(48.1% 0.047 357.3)
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 #40675E, 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 0.039
- Slate #516572 ΔE 0.043
- Dark Aquamarine #017371 ΔE 0.047
- Deep Turquoise #017374 ΔE 0.049
- Petrol #005F6A ΔE 0.057
- Dim Gray #696969 ΔE 0.061
- Bluegreen #017A79 ΔE 0.063
Use #40675E 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.