#004151
Closest named color: Midnight Green (#073B4C). oklch(34.7% 0.064 220.9), rgb(0, 65, 81).
Aa
White text reads best on this color (11.20:1).
About this color
#004151 is a dark, muted teal or cyan. In OKLCH its lightness is 35%, its chroma 0.064 and its hue 221°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Green (#073B4C), ΔE 0.020 away. White text reads best on it, at 11.20:1.
| Hue family | Teals and cyans |
| Lightness | dark (35%) |
| Chroma | muted (0.064) |
| Temperature | cool |
| Nearest name | Midnight Green (#073B4C) |
| Black text | 1.87:1 |
| White text | 11.20:1 |
Values
| HEX | #004151 |
| RGB | rgb(0, 65, 81) |
| HSL | hsl(192, 100%, 16%) |
| OKLCH | oklch(34.7% 0.064 220.9) |
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 #004151 | 11.20:1 | AAA | Lc -99.3 | Preferred for body text |
| Black text on #004151 | 1.87:1 | Fails | Lc 8.5 | Not readable |
| #004151 text on white | 11.20:1 | AAA | Lc 95.4 | Preferred for body text |
| #004151 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
#F1F6F8
oklch(97% 0.006 223.5)
-
Step 100
100
#E0ECF0
oklch(93.5% 0.014 219.6)
-
Step 200
200
#C7DEE6
oklch(88.6% 0.027 220.7)
-
Step 300
300
#9FC8D6
oklch(80.8% 0.048 220.7)
-
Step 400
400
#68ACC2
oklch(70.7% 0.076 220.7)
-
Step 500
500
#3597B3
oklch(63.2% 0.098 220.7)
-
Step 600
600
#00809D
oklch(55.6% 0.102 221.1)
-
Step 700
700
#006C84
oklch(49.2% 0.09 220.2)
-
Step 800
800
#00586D
oklch(42.6% 0.078 221.3)
-
Step 900
900 (this color)
#004151
oklch(34.7% 0.064 220.9)
-
Step 950
950
#0B2B34
oklch(27% 0.04 219.8)
#004151 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) | #373F52 | 0.051 |
| Deuteranopia (no green cones) | #2D3851 | 0.045 |
| Tritanopia (no blue cones) | #004646 | 0.030 |
| Achromatopsia (no color) | #3B3B3B | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #004151
#004151
oklch(34.7% 0.064 220.9)
- #552E1F
#552E1F
oklch(34.8% 0.063 41.5)
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 #004151, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Green #073B4C ΔE 0.020
- Dark Blue Grey #1F3B4D ΔE 0.025
- Charcoal #264653 ΔE 0.035
- Dark Grey Blue #29465B ΔE 0.041
- Dark Teal #014D4E ΔE 0.043
- Prussian Blue #1D3557 ΔE 0.046
- Onyx #343A40 ΔE 0.052
- Gunmetal #293241 ΔE 0.055
Use #004151 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.