#40766B
Closest named color: Bluegreen (#017A79). oklch(52.5% 0.061 179.1), rgb(64, 118, 107).
Aa
White text reads best on this color (5.22:1).
About this color
#40766B is a medium-dark, muted teal or cyan. In OKLCH its lightness is 52%, its chroma 0.061 and its hue 179°. Its hue sits on the cool side of the wheel. The nearest named color is Bluegreen (#017A79), ΔE 0.034 away. White text reads best on it, at 5.22:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (52%) |
| Chroma | muted (0.061) |
| Temperature | cool |
| Nearest name | Bluegreen (#017A79) |
| Black text | 4.02:1 |
| White text | 5.22:1 |
Values
| HEX | #40766B |
| RGB | rgb(64, 118, 107) |
| HSL | hsl(168, 30%, 36%) |
| OKLCH | oklch(52.5% 0.061 179.1) |
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 #40766B | 5.22:1 | AA | Lc -81.2 | Fine for body text |
| Black text on #40766B | 4.02:1 | AA large text | Lc 28.3 | Dividers and decoration only |
| #40766B text on white | 5.22:1 | AA | Lc 75.8 | Fine for body text |
| #40766B text on black | 4.02:1 | AA large text | Lc -25.9 | 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 600.
-
Step 50
50
#F3F6F5
oklch(97.1% 0.003 174.5)
-
Step 100
100
#E5ECEA
oklch(93.7% 0.008 177.3)
-
Step 200
200
#CFDDD9
oklch(88.6% 0.016 177)
-
Step 300
300
#AFC7C1
oklch(81% 0.027 178.9)
-
Step 400
400
#84AAA1
oklch(70.7% 0.043 178.9)
-
Step 500
500
#63958A
oklch(63.1% 0.056 179)
-
Step 600
600 (this color)
#40766B
oklch(52.5% 0.061 179.1)
-
Step 700
700
#3A6B61
oklch(49% 0.056 179.1)
-
Step 800
800
#31584F
oklch(42.8% 0.047 177.4)
-
Step 900
900
#2B4842
oklch(37.7% 0.037 179.7)
-
Step 950
950
#1A2A27
oklch(27% 0.022 181.6)
#40766B 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) | #72706B | 0.065 |
| Deuteranopia (no green cones) | #696A6C | 0.060 |
| Tritanopia (no blue cones) | #2B7873 | 0.018 |
| Achromatopsia (no color) | #6C6C6C | 0.061 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40766B
#40766B
oklch(52.5% 0.061 179.1)
- #885C69
#885C69
oklch(52.6% 0.06 0.1)
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 #40766B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluegreen #017A79 ΔE 0.034
- Dark Aquamarine #017371 ΔE 0.038
- Deep Turquoise #017374 ΔE 0.039
- Deep Aqua #08787F ΔE 0.039
- Teal #008080 ΔE 0.042
- Slate #516572 ΔE 0.059
- Dark Aqua #05696B ΔE 0.059
- Dim Gray #696969 ΔE 0.061
Use #40766B 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.