#03404D
Closest named color: Midnight Green (#073B4C). oklch(34.3% 0.06 217.3), rgb(3, 64, 77).
Aa
White text reads best on this color (11.38:1).
About this color
#03404D is a dark, muted teal or cyan. In OKLCH its lightness is 34%, its chroma 0.060 and its hue 217°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Green (#073B4C), ΔE 0.017 away. White text reads best on it, at 11.38:1.
| Hue family | Teals and cyans |
| Lightness | dark (34%) |
| Chroma | muted (0.060) |
| Temperature | cool |
| Nearest name | Midnight Green (#073B4C) |
| Black text | 1.84:1 |
| White text | 11.38:1 |
Values
| HEX | #03404D |
| RGB | rgb(3, 64, 77) |
| HSL | hsl(191, 93%, 16%) |
| OKLCH | oklch(34.3% 0.06 217.3) |
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 #03404D | 11.38:1 | AAA | Lc -99.6 | Preferred for body text |
| Black text on #03404D | 1.84:1 | Fails | Lc 8.0 | Not readable |
| #03404D text on white | 11.38:1 | AAA | Lc 95.9 | Preferred for body text |
| #03404D 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
#C8DEE4
oklch(88.6% 0.025 215.9)
-
Step 300
300
#A1C8D4
oklch(80.9% 0.045 218.5)
-
Step 400
400
#6AACBE
oklch(70.7% 0.072 217.1)
-
Step 500
500
#3B97AE
oklch(63.1% 0.092 217.3)
-
Step 600
600
#008199
oklch(55.6% 0.099 216.9)
-
Step 700
700
#006C81
oklch(49% 0.088 217.4)
-
Step 800
800
#00596A
oklch(42.8% 0.076 216.6)
-
Step 900
900 (this color)
#03404D
oklch(34.3% 0.06 217.3)
-
Step 950
950
#0D2B33
oklch(27.1% 0.038 218.3)
#03404D 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) | #383E4E | 0.052 |
| Deuteranopia (no green cones) | #2E374D | 0.046 |
| Tritanopia (no blue cones) | #004444 | 0.024 |
| Achromatopsia (no color) | #3A3A3A | 0.060 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #03404D
#03404D
oklch(34.3% 0.06 217.3)
- #532D22
#532D22
oklch(34.3% 0.059 37)
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 #03404D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Green #073B4C ΔE 0.017
- Dark Blue Grey #1F3B4D ΔE 0.024
- Charcoal #264653 ΔE 0.037
- Dark Teal #014D4E ΔE 0.044
- Dark Grey Blue #29465B ΔE 0.045
- Prussian Blue #1D3557 ΔE 0.047
- Onyx #343A40 ΔE 0.049
- Gunmetal #293241 ΔE 0.051
Use #03404D 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.