#003C40
Closest named color: Midnight Green (#073B4C). oklch(32.4% 0.055 202.2), rgb(0, 60, 64).
Aa
White text reads best on this color (12.20:1).
About this color
#003C40 is a dark, muted teal or cyan. In OKLCH its lightness is 32%, its chroma 0.055 and its hue 202°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Green (#073B4C), ΔE 0.024 away. White text reads best on it, at 12.20:1.
| Hue family | Teals and cyans |
| Lightness | dark (32%) |
| Chroma | muted (0.055) |
| Temperature | cool |
| Nearest name | Midnight Green (#073B4C) |
| Black text | 1.72:1 |
| White text | 12.20:1 |
Values
| HEX | #003C40 |
| RGB | rgb(0, 60, 64) |
| HSL | hsl(184, 100%, 13%) |
| OKLCH | oklch(32.4% 0.055 202.2) |
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 #003C40 | 12.20:1 | AAA | Lc -101.0 | Preferred for body text |
| Black text on #003C40 | 1.72:1 | Fails | Lc 0.0 | Not readable |
| #003C40 text on white | 12.20:1 | AAA | Lc 97.4 | Preferred for body text |
| #003C40 text on black | 1.72:1 | 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
#F1F7F7
oklch(97.2% 0.006 197.1)
-
Step 100
100
#E1ECED
oklch(93.5% 0.012 203.5)
-
Step 200
200
#C9DEE0
oklch(88.6% 0.023 203.7)
-
Step 300
300
#A2C9CC
oklch(80.9% 0.042 202.2)
-
Step 400
400
#6DADB2
oklch(70.6% 0.066 202.1)
-
Step 500
500
#3F999F
oklch(63.2% 0.085 201.3)
-
Step 600
600
#0E838A
oklch(55.6% 0.092 201.6)
-
Step 700
700
#006E75
oklch(49% 0.083 202.5)
-
Step 800
800
#065A60
oklch(42.7% 0.071 202.9)
-
Step 900
900 (this color)
#003C40
oklch(32.4% 0.055 202.2)
-
Step 950
950
#0E2B2E
oklch(26.9% 0.035 204.5)
#003C40 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) | #363940 | 0.055 |
| Deuteranopia (no green cones) | #2E3340 | 0.051 |
| Tritanopia (no blue cones) | #003F3D | 0.013 |
| Achromatopsia (no color) | #353535 | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #003C40
#003C40
oklch(32.4% 0.055 202.2)
- #4C2827
#4C2827
oklch(32.4% 0.054 22.2)
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 #003C40, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Green #073B4C ΔE 0.024
- Dark Blue Grey #1F3B4D ΔE 0.036
- Gunmetal #293241 ΔE 0.048
- Onyx #343A40 ΔE 0.051
- Charcoal #264653 ΔE 0.056
- Dark Teal #014D4E ΔE 0.058
- Prussian Blue #1D3557 ΔE 0.058
- Evergreen #05472A ΔE 0.062
Use #003C40 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.