#00404F
Closest named color: Midnight Green (#073B4C). oklch(34.4% 0.062 219.7), rgb(0, 64, 79).
Aa
White text reads best on this color (11.37:1).
About this color
#00404F is a dark, muted teal or cyan. In OKLCH its lightness is 34%, its chroma 0.062 and its hue 220°. 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 11.37:1.
| Hue family | Teals and cyans |
| Lightness | dark (34%) |
| Chroma | muted (0.062) |
| Temperature | cool |
| Nearest name | Midnight Green (#073B4C) |
| Black text | 1.84:1 |
| White text | 11.37:1 |
Values
| HEX | #00404F |
| RGB | rgb(0, 64, 79) |
| HSL | hsl(191, 100%, 15%) |
| OKLCH | oklch(34.4% 0.062 219.7) |
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 #00404F | 11.37:1 | AAA | Lc -99.6 | Preferred for body text |
| Black text on #00404F | 1.84:1 | Fails | Lc 8.1 | Not readable |
| #00404F text on white | 11.37:1 | AAA | Lc 95.8 | Preferred for body text |
| #00404F text on black | 1.84:1 | 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
#E1ECF0
oklch(93.6% 0.013 221.4)
-
Step 200
200
#C7DEE5
oklch(88.6% 0.026 218)
-
Step 300
300
#A0C8D6
oklch(80.9% 0.047 221.2)
-
Step 400
400
#68ACC1
oklch(70.7% 0.075 219.7)
-
Step 500
500
#3797B1
oklch(63.1% 0.096 219.3)
-
Step 600
600
#00809C
oklch(55.5% 0.101 220.3)
-
Step 700
700
#006C83
oklch(49.1% 0.089 219.3)
-
Step 800
800
#00586C
oklch(42.6% 0.078 220.2)
-
Step 900
900 (this color)
#00404F
oklch(34.4% 0.062 219.7)
-
Step 950
950
#0C2B34
oklch(27.1% 0.04 220.3)
#00404F 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) | #373E50 | 0.052 |
| Deuteranopia (no green cones) | #2D374F | 0.046 |
| Tritanopia (no blue cones) | #004545 | 0.028 |
| Achromatopsia (no color) | #3A3A3A | 0.063 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #00404F
#00404F
oklch(34.4% 0.062 219.7)
- #542D1F
#542D1F
oklch(34.4% 0.062 40.3)
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 #00404F, 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 0.024
- Charcoal #264653 ΔE 0.037
- Dark Grey Blue #29465B ΔE 0.045
- Prussian Blue #1D3557 ΔE 0.045
- Dark Teal #014D4E ΔE 0.046
- Onyx #343A40 ΔE 0.051
- Gunmetal #293241 ΔE 0.053
Use #00404F 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.