#003F49
Closest named color: Midnight Green (#073B4C). oklch(33.8% 0.059 212.2), rgb(0, 63, 73).
Aa
White text reads best on this color (11.62:1).
About this color
#003F49 is a dark, muted teal or cyan. In OKLCH its lightness is 34%, its chroma 0.059 and its hue 212°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Green (#073B4C), ΔE 0.016 away. White text reads best on it, at 11.62:1.
| Hue family | Teals and cyans |
| Lightness | dark (34%) |
| Chroma | muted (0.059) |
| Temperature | cool |
| Nearest name | Midnight Green (#073B4C) |
| Black text | 1.80:1 |
| White text | 11.62:1 |
Values
| HEX | #003F49 |
| RGB | rgb(0, 63, 73) |
| HSL | hsl(188, 100%, 14%) |
| OKLCH | oklch(33.8% 0.059 212.2) |
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 #003F49 | 11.62:1 | AAA | Lc -100.0 | Preferred for body text |
| Black text on #003F49 | 1.80:1 | Fails | Lc 7.6 | Not readable |
| #003F49 text on white | 11.62:1 | AAA | Lc 96.3 | Preferred for body text |
| #003F49 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
#F1F7F8
oklch(97.2% 0.007 208.8)
-
Step 100
100
#E1ECEF
oklch(93.6% 0.012 215.8)
-
Step 200
200
#C8DEE3
oklch(88.6% 0.024 212.9)
-
Step 300
300
#A1C9D1
oklch(81% 0.044 211.2)
-
Step 400
400
#6AADBA
oklch(70.8% 0.071 211.3)
-
Step 500
500
#3A98A9
oklch(63.1% 0.09 211.7)
-
Step 600
600
#008294
oklch(55.7% 0.097 211.6)
-
Step 700
700
#006D7D
oklch(49.1% 0.086 212.3)
-
Step 800
800
#005967
oklch(42.6% 0.075 213)
-
Step 900
900 (this color)
#003F49
oklch(33.8% 0.059 212.2)
-
Step 950
950
#0C2B31
oklch(26.9% 0.038 212.5)
#003F49 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) | #373C4A | 0.054 |
| Deuteranopia (no green cones) | #2E3649 | 0.048 |
| Tritanopia (no blue cones) | #004342 | 0.021 |
| Achromatopsia (no color) | #393939 | 0.059 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #003F49
#003F49
oklch(33.8% 0.059 212.2)
- #512B23
#512B23
oklch(33.6% 0.058 32.8)
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 #003F49, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Green #073B4C ΔE 0.016
- Dark Blue Grey #1F3B4D ΔE 0.027
- Charcoal #264653 ΔE 0.042
- Dark Teal #014D4E ΔE 0.047
- Onyx #343A40 ΔE 0.049
- Gunmetal #293241 ΔE 0.050
- Prussian Blue #1D3557 ΔE 0.050
- Dark Grey Blue #29465B ΔE 0.052
Use #003F49 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.