#004247
Closest named color: Midnight Green (#073B4C). oklch(34.5% 0.059 203.3), rgb(0, 66, 71).
Aa
White text reads best on this color (11.22:1).
About this color
#004247 is a dark, muted teal or cyan. In OKLCH its lightness is 35%, its chroma 0.059 and its hue 203°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Green (#073B4C), ΔE 0.028 away. White text reads best on it, at 11.22:1.
| Hue family | Teals and cyans |
| Lightness | dark (35%) |
| Chroma | muted (0.059) |
| Temperature | cool |
| Nearest name | Midnight Green (#073B4C) |
| Black text | 1.87:1 |
| White text | 11.22:1 |
Values
| HEX | #004247 |
| RGB | rgb(0, 66, 71) |
| HSL | hsl(184, 100%, 14%) |
| OKLCH | oklch(34.5% 0.059 203.3) |
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 #004247 | 11.22:1 | AAA | Lc -99.3 | Preferred for body text |
| Black text on #004247 | 1.87:1 | Fails | Lc 8.4 | Not readable |
| #004247 text on white | 11.22:1 | AAA | Lc 95.5 | Preferred for body text |
| #004247 text on black | 1.87:1 | 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
#E1EDEE
oklch(93.7% 0.013 202.9)
-
Step 200
200
#C7DEE0
oklch(88.4% 0.025 203.1)
-
Step 300
300
#A0CACD
oklch(81% 0.044 201.7)
-
Step 400
400
#69AEB4
oklch(70.7% 0.07 202.8)
-
Step 500
500
#3799A2
oklch(63% 0.09 203.8)
-
Step 600
600
#00838C
oklch(55.6% 0.095 203.3)
-
Step 700
700
#006E76
oklch(49.1% 0.084 203.6)
-
Step 800
800
#005A61
oklch(42.6% 0.073 204)
-
Step 900
900 (this color)
#004247
oklch(34.5% 0.059 203.3)
-
Step 950
950
#0C2C2F
oklch(27.1% 0.037 203.8)
#004247 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) | #3B3F47 | 0.057 |
| Deuteranopia (no green cones) | #333847 | 0.055 |
| Tritanopia (no blue cones) | #004543 | 0.014 |
| Achromatopsia (no color) | #3B3B3B | 0.059 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #004247
#004247
oklch(34.5% 0.059 203.3)
- #542C2B
#542C2B
oklch(34.5% 0.059 22.1)
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 #004247, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Green #073B4C ΔE 0.028
- Dark Blue Grey #1F3B4D ΔE 0.035
- Dark Teal #014D4E ΔE 0.037
- Charcoal #264653 ΔE 0.039
- Onyx #343A40 ΔE 0.050
- Dark Grey Blue #29465B ΔE 0.051
- Dark Blue Green #005249 ΔE 0.055
- Evergreen #05472A ΔE 0.058
Use #004247 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.