#40595D
Closest named color: YInMn Blue (#415A77). oklch(44.5% 0.031 208.4), rgb(64, 89, 93).
Aa
White text reads best on this color (7.48:1).
About this color
#40595D is a dark, muted teal or cyan. In OKLCH its lightness is 45%, its chroma 0.031 and its hue 208°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.043 away. White text reads best on it, at 7.48:1.
| Hue family | Teals and cyans |
| Lightness | dark (45%) |
| Chroma | muted (0.031) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.80:1 |
| White text | 7.48:1 |
Values
| HEX | #40595D |
| RGB | rgb(64, 89, 93) |
| HSL | hsl(188, 18%, 31%) |
| OKLCH | oklch(44.5% 0.031 208.4) |
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 #40595D | 7.48:1 | AAA | Lc -90.8 | Preferred for body text |
| Black text on #40595D | 2.80:1 | Fails | Lc 18.0 | Dividers and decoration only |
| #40595D text on white | 7.48:1 | AAA | Lc 86.0 | Fine for body text |
| #40595D text on black | 2.80:1 | Fails | Lc -16.1 | 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 800.
-
Step 50
50
#F4F6F6
oklch(97.2% 0.002 197.1)
-
Step 100
100
#E6EBEC
oklch(93.7% 0.006 211)
-
Step 200
200
#D2DBDC
oklch(88.5% 0.01 204.9)
-
Step 300
300
#B4C4C7
oklch(80.9% 0.018 210.2)
-
Step 400
400
#8DA6AA
oklch(70.7% 0.028 208.3)
-
Step 500
500
#709095
oklch(63.1% 0.037 208)
-
Step 600
600
#587A80
oklch(55.6% 0.04 209.6)
-
Step 700
700
#48676C
oklch(49.2% 0.037 208.5)
-
Step 800
800 (this color)
#40595D
oklch(44.5% 0.031 208.4)
-
Step 900
900
#334548
oklch(37.6% 0.023 208.8)
-
Step 950
950
#1E292A
oklch(27.1% 0.015 203.2)
#40595D 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) | #55575D | 0.030 |
| Deuteranopia (no green cones) | #50535D | 0.028 |
| Tritanopia (no blue cones) | #365B5A | 0.015 |
| Achromatopsia (no color) | #555555 | 0.031 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40595D
#40595D
oklch(44.5% 0.031 208.4)
- #644E4A
#644E4A
oklch(44.6% 0.031 30.2)
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 #40595D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.043
- Dark Slate Gray #2F4F4F ΔE 0.044
- Petrol #005F6A ΔE 0.046
- Dark Green Blue #1F6357 ΔE 0.047
- Slate #516572 ΔE 0.052
- Dusty Grape #545775 ΔE 0.053
- Deep Teal #00555A ΔE 0.053
- Dark Aqua #05696B ΔE 0.057
Use #40595D 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.