#004040
Closest named color: Midnight Green (#073B4C). oklch(33.6% 0.057 194.8), rgb(0, 64, 64).
Aa
White text reads best on this color (11.61:1).
About this color
#004040 is a dark, muted teal or cyan. In OKLCH its lightness is 34%, its chroma 0.057 and its hue 195°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Green (#073B4C), ΔE 0.032 away. White text reads best on it, at 11.61:1.
| Hue family | Teals and cyans |
| Lightness | dark (34%) |
| Chroma | muted (0.057) |
| Temperature | cool |
| Nearest name | Midnight Green (#073B4C) |
| Black text | 1.80:1 |
| White text | 11.61:1 |
Values
| HEX | #004040 |
| RGB | rgb(0, 64, 64) |
| HSL | hsl(180, 100%, 13%) |
| OKLCH | oklch(33.6% 0.057 194.8) |
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 #004040 | 11.61:1 | AAA | Lc -100.0 | Preferred for body text |
| Black text on #004040 | 1.80:1 | Fails | Lc 7.6 | Not readable |
| #004040 text on white | 11.61:1 | AAA | Lc 96.3 | Preferred for body text |
| #004040 text on black | 1.80:1 | Fails | Lc 0.0 | Not readable |
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 900.
-
Step 50
50
#F1F7F6
oklch(97.1% 0.006 185.3)
-
Step 100
100
#E1EDEC
oklch(93.7% 0.013 190.9)
-
Step 200
200
#C8DEDE
oklch(88.4% 0.023 196.7)
-
Step 300
300
#A1CAC9
oklch(80.9% 0.043 194.5)
-
Step 400
400
#6BAEAE
oklch(70.6% 0.068 195.7)
-
Step 500
500
#3B9A9A
oklch(63.1% 0.088 195.2)
-
Step 600
600
#008484
oklch(55.5% 0.095 194.8)
-
Step 700
700
#006F6F
oklch(49% 0.084 194.8)
-
Step 800
800
#005B5B
oklch(42.7% 0.073 194.8)
-
Step 900
900 (this color)
#004040
oklch(33.6% 0.057 194.8)
-
Step 950
950
#0D2C2C
oklch(27% 0.036 195.2)
#004040 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) | #3B3C40 | 0.060 |
| Deuteranopia (no green cones) | #323640 | 0.055 |
| Tritanopia (no blue cones) | #004240 | 0.007 |
| Achromatopsia (no color) | #393939 | 0.058 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #004040
#004040
oklch(33.6% 0.057 194.8)
- #512A2D
#512A2D
oklch(33.7% 0.058 15.7)
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 #004040, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Green #073B4C ΔE 0.032
- Dark Blue Grey #1F3B4D ΔE 0.040
- Dark Teal #014D4E ΔE 0.045
- Charcoal #264653 ΔE 0.049
- Evergreen #05472A ΔE 0.051
- Onyx #343A40 ΔE 0.051
- Gunmetal #293241 ΔE 0.057
- Dark Blue Green #005249 ΔE 0.060
Use #004040 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.