#40717A
Closest named color: Deep Aqua (#08787F). oklch(51.8% 0.055 210.6), rgb(64, 113, 122).
Aa
White text reads best on this color (5.43:1).
About this color
#40717A is a medium-dark, muted teal or cyan. In OKLCH its lightness is 52%, its chroma 0.055 and its hue 211°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Aqua (#08787F), ΔE 0.034 away. White text reads best on it, at 5.43:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (52%) |
| Chroma | muted (0.055) |
| Temperature | cool |
| Nearest name | Deep Aqua (#08787F) |
| Black text | 3.86:1 |
| White text | 5.43:1 |
Values
| HEX | #40717A |
| RGB | rgb(64, 113, 122) |
| HSL | hsl(189, 31%, 36%) |
| OKLCH | oklch(51.8% 0.055 210.6) |
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 #40717A | 5.43:1 | AA | Lc -82.3 | Fine for body text |
| Black text on #40717A | 3.86:1 | AA large text | Lc 27.0 | Dividers and decoration only |
| #40717A text on white | 5.43:1 | AA | Lc 77.0 | Fine for body text |
| #40717A text on black | 3.86:1 | AA large text | Lc -24.7 | 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
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E4EBED
oklch(93.5% 0.008 216.6)
-
Step 200
200
#CFDCDF
oklch(88.6% 0.015 213.1)
-
Step 300
300
#AEC6CA
oklch(81% 0.027 208.7)
-
Step 400
400
#82A8B0
oklch(70.6% 0.043 212)
-
Step 500
500
#62939C
oklch(63.2% 0.054 210.3)
-
Step 600
600
#477D87
oklch(55.6% 0.059 210.8)
-
Step 700
700 (this color)
#40717A
oklch(51.8% 0.055 210.6)
-
Step 800
800
#2F565D
oklch(42.7% 0.046 210.3)
-
Step 900
900
#2A474C
oklch(37.7% 0.036 209.6)
-
Step 950
950
#192A2D
oklch(27.1% 0.023 209.7)
#40717A 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) | #696E7B | 0.052 |
| Deuteranopia (no green cones) | #60677A | 0.047 |
| Tritanopia (no blue cones) | #237574 | 0.029 |
| Achromatopsia (no color) | #6A6A6A | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40717A
#40717A
oklch(51.8% 0.055 210.6)
- #855D55
#855D55
oklch(51.8% 0.054 31.6)
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 #40717A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Aqua #08787F ΔE 0.034
- Slate #516572 ΔE 0.037
- Metallic Blue #4F738E ΔE 0.038
- Deep Turquoise #017374 ΔE 0.038
- Dark Aquamarine #017371 ΔE 0.041
- Bluegreen #017A79 ΔE 0.041
- Ocean #017B92 ΔE 0.046
- Sea Blue #047495 ΔE 0.049
Use #40717A 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.