#004140
Closest named color: Midnight Green (#073B4C). oklch(33.9% 0.058 193), rgb(0, 65, 64).
Aa
White text reads best on this color (11.47:1).
About this color
#004140 is a dark, muted teal or cyan. In OKLCH its lightness is 34%, its chroma 0.058 and its hue 193°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Green (#073B4C), ΔE 0.035 away. White text reads best on it, at 11.47:1.
| Hue family | Teals and cyans |
| Lightness | dark (34%) |
| Chroma | muted (0.058) |
| Temperature | cool |
| Nearest name | Midnight Green (#073B4C) |
| Black text | 1.83:1 |
| White text | 11.47:1 |
Values
| HEX | #004140 |
| RGB | rgb(0, 65, 64) |
| HSL | hsl(179, 100%, 13%) |
| OKLCH | oklch(33.9% 0.058 193) |
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 #004140 | 11.47:1 | AAA | Lc -99.8 | Preferred for body text |
| Black text on #004140 | 1.83:1 | Fails | Lc 7.9 | Not readable |
| #004140 text on white | 11.47:1 | AAA | Lc 96.0 | Preferred for body text |
| #004140 text on black | 1.83:1 | 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
#C8DFDD
oklch(88.6% 0.025 190.4)
-
Step 300
300
#A1CAC8
oklch(80.9% 0.043 192.6)
-
Step 400
400
#6AAFAC
oklch(70.8% 0.07 192.1)
-
Step 500
500
#3A9A98
oklch(63% 0.089 193.2)
-
Step 600
600
#008483
oklch(55.5% 0.095 193.8)
-
Step 700
700
#006F6E
oklch(49% 0.084 193.7)
-
Step 800
800
#005B5A
oklch(42.6% 0.073 193.5)
-
Step 900
900 (this color)
#004140
oklch(33.9% 0.058 193)
-
Step 950
950
#0C2C2B
oklch(26.9% 0.037 192.3)
#004140 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) | #3C3D40 | 0.061 |
| Deuteranopia (no green cones) | #343740 | 0.057 |
| Tritanopia (no blue cones) | #004341 | 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°).
- #004140
#004140
oklch(33.9% 0.058 193)
- #522A2F
#522A2F
oklch(33.9% 0.059 12.8)
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 #004140, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Green #073B4C ΔE 0.035
- Dark Blue Grey #1F3B4D ΔE 0.042
- Dark Teal #014D4E ΔE 0.042
- Charcoal #264653 ΔE 0.048
- Evergreen #05472A ΔE 0.048
- Onyx #343A40 ΔE 0.052
- Dark Blue Green #005249 ΔE 0.057
- Gunmetal #293241 ΔE 0.059
Use #004140 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.