#073C51
Closest named color: Midnight Green (#073B4C). oklch(33.5% 0.063 230.9), rgb(7, 60, 81).
Aa
White text reads best on this color (11.83:1).
About this color
#073C51 is a dark, muted blue. In OKLCH its lightness is 33%, its chroma 0.063 and its hue 231°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Green (#073B4C), ΔE 0.009 away. White text reads best on it, at 11.83:1.
| Hue family | Blues |
| Lightness | dark (33%) |
| Chroma | muted (0.063) |
| Temperature | cool |
| Nearest name | Midnight Green (#073B4C) |
| Black text | 1.77:1 |
| White text | 11.83:1 |
Values
| HEX | #073C51 |
| RGB | rgb(7, 60, 81) |
| HSL | hsl(197, 84%, 17%) |
| OKLCH | oklch(33.5% 0.063 230.9) |
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 #073C51 | 11.83:1 | AAA | Lc -100.4 | Preferred for body text |
| Black text on #073C51 | 1.77:1 | Fails | Lc 0.0 | Not readable |
| #073C51 text on white | 11.83:1 | AAA | Lc 96.8 | Preferred for body text |
| #073C51 text on black | 1.77:1 | 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
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E1ECF1
oklch(93.6% 0.014 226.6)
-
Step 200
200
#C9DDE8
oklch(88.6% 0.026 231.7)
-
Step 300
300
#A2C7DA
oklch(80.9% 0.048 230.4)
-
Step 400
400
#6EAAC7
oklch(70.8% 0.075 230.1)
-
Step 500
500
#4294B9
oklch(63.1% 0.097 230.5)
-
Step 600
600
#187EA5
oklch(55.7% 0.105 230.2)
-
Step 700
700
#036A8E
oklch(49.2% 0.098 230.8)
-
Step 800
800
#0D5673
oklch(42.6% 0.081 231.3)
-
Step 900
900 (this color)
#073C51
oklch(33.5% 0.063 230.9)
-
Step 950
950
#0F2A36
oklch(27% 0.04 229.8)
#073C51 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) | #313B52 | 0.042 |
| Deuteranopia (no green cones) | #283451 | 0.037 |
| Tritanopia (no blue cones) | #004243 | 0.037 |
| Achromatopsia (no color) | #373737 | 0.063 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #073C51
#073C51
oklch(33.5% 0.063 230.9)
- #502C16
#502C16
oklch(33.4% 0.063 50.6)
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 #073C51, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Green #073B4C ΔE 0.009
- Dark Blue Grey #1F3B4D ΔE 0.018
- Prussian Blue #1D3557 ΔE 0.031
- Gunmetal #293241 ΔE 0.045
- Charcoal #264653 ΔE 0.045
- Marine Blue #01386A ΔE 0.049
- Dark Grey Blue #29465B ΔE 0.049
- Onyx #343A40 ΔE 0.052
Use #073C51 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.