#00403D
Closest named color: Midnight Green (#073B4C). oklch(33.5% 0.058 189.5), rgb(0, 64, 61).
Aa
White text reads best on this color (11.66:1).
About this color
#00403D is a dark, muted teal or cyan. In OKLCH its lightness is 34%, its chroma 0.058 and its hue 190°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Green (#073B4C), ΔE 0.037 away. White text reads best on it, at 11.66:1.
| Hue family | Teals and cyans |
| Lightness | dark (34%) |
| Chroma | muted (0.058) |
| Temperature | cool |
| Nearest name | Midnight Green (#073B4C) |
| Black text | 1.80:1 |
| White text | 11.66:1 |
Values
| HEX | #00403D |
| RGB | rgb(0, 64, 61) |
| HSL | hsl(177, 100%, 13%) |
| OKLCH | oklch(33.5% 0.058 189.5) |
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 #00403D | 11.66:1 | AAA | Lc -100.1 | Preferred for body text |
| Black text on #00403D | 1.80:1 | Fails | Lc 7.5 | Not readable |
| #00403D text on white | 11.66:1 | AAA | Lc 96.4 | Preferred for body text |
| #00403D 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
#F1F7F6
oklch(97.1% 0.006 185.3)
-
Step 100
100
#E1EDEB
oklch(93.7% 0.013 185.1)
-
Step 200
200
#C8DFDC
oklch(88.6% 0.025 187.3)
-
Step 300
300
#A1CAC6
oklch(80.8% 0.044 189)
-
Step 400
400
#6BAFAA
oklch(70.7% 0.07 189.7)
-
Step 500
500
#3B9B95
oklch(63.2% 0.089 189.4)
-
Step 600
600
#00857F
oklch(55.6% 0.096 189.2)
-
Step 700
700
#00706B
oklch(49.2% 0.085 189.4)
-
Step 800
800
#005C58
oklch(42.8% 0.074 189.6)
-
Step 900
900 (this color)
#00403D
oklch(33.5% 0.058 189.5)
-
Step 950
950
#0D2C2A
oklch(26.9% 0.037 189.4)
#00403D 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) | #3B3C3D | 0.060 |
| Deuteranopia (no green cones) | #33363D | 0.057 |
| Tritanopia (no blue cones) | #00423F | 0.007 |
| Achromatopsia (no color) | #383838 | 0.058 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #00403D
#00403D
oklch(33.5% 0.058 189.5)
- #502930
#502930
oklch(33.5% 0.059 9.3)
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 #00403D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Green #073B4C ΔE 0.037
- Dark Blue Grey #1F3B4D ΔE 0.045
- Evergreen #05472A ΔE 0.046
- Dark Teal #014D4E ΔE 0.047
- Charcoal #264653 ΔE 0.053
- Onyx #343A40 ΔE 0.053
- Gunmetal #293241 ΔE 0.059
- Pakistan Green #283618 ΔE 0.060
Use #00403D 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.