#00424B
Closest named color: Midnight Green (#073B4C). oklch(34.7% 0.06 210), rgb(0, 66, 75).
Aa
White text reads best on this color (11.16:1).
About this color
#00424B is a dark, muted teal or cyan. In OKLCH its lightness is 35%, its chroma 0.060 and its hue 210°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Green (#073B4C), ΔE 0.024 away. White text reads best on it, at 11.16:1.
| Hue family | Teals and cyans |
| Lightness | dark (35%) |
| Chroma | muted (0.060) |
| Temperature | cool |
| Nearest name | Midnight Green (#073B4C) |
| Black text | 1.88:1 |
| White text | 11.16:1 |
Values
| HEX | #00424B |
| RGB | rgb(0, 66, 75) |
| HSL | hsl(187, 100%, 15%) |
| OKLCH | oklch(34.7% 0.06 210) |
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 #00424B | 11.16:1 | AAA | Lc -99.2 | Preferred for body text |
| Black text on #00424B | 1.88:1 | Fails | Lc 8.5 | Not readable |
| #00424B text on white | 11.16:1 | AAA | Lc 95.4 | Preferred for body text |
| #00424B text on black | 1.88:1 | Fails | Lc -7.3 | 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
#C7DEE2
oklch(88.5% 0.025 209.3)
-
Step 300
300
#A0C9D1
oklch(80.9% 0.045 210.8)
-
Step 400
400
#68ADB9
oklch(70.6% 0.072 209.8)
-
Step 500
500
#3698A8
oklch(63% 0.092 210.3)
-
Step 600
600
#008292
oklch(55.6% 0.096 209.8)
-
Step 700
700
#006D7B
oklch(49% 0.085 210.2)
-
Step 800
800
#005A65
oklch(42.8% 0.074 209.1)
-
Step 900
900 (this color)
#00424B
oklch(34.7% 0.06 210)
-
Step 950
950
#0B2B31
oklch(26.9% 0.038 212.2)
#00424B 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) | #3A3F4C | 0.056 |
| Deuteranopia (no green cones) | #31384B | 0.052 |
| Tritanopia (no blue cones) | #004645 | 0.020 |
| Achromatopsia (no color) | #3B3B3B | 0.060 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #00424B
#00424B
oklch(34.7% 0.06 210)
- #552D27
#552D27
oklch(34.7% 0.06 29.5)
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 #00424B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Green #073B4C ΔE 0.024
- Dark Blue Grey #1F3B4D ΔE 0.031
- Charcoal #264653 ΔE 0.035
- Dark Teal #014D4E ΔE 0.037
- Dark Grey Blue #29465B ΔE 0.046
- Onyx #343A40 ΔE 0.050
- Prussian Blue #1D3557 ΔE 0.055
- Dark Blue Green #005249 ΔE 0.057
Use #00424B 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.