#01304F
Closest named color: Marine (#042E60). oklch(29.8% 0.073 244.4), rgb(1, 48, 79).
Aa
White text reads best on this color (13.66:1).
About this color
#01304F is a dark, moderately saturated blue. In OKLCH its lightness is 30%, its chroma 0.073 and its hue 244°. Its hue sits on the cool side of the wheel. The nearest named color is Marine (#042E60), ΔE 0.033 away. White text reads best on it, at 13.66:1.
| Hue family | Blues |
| Lightness | dark (30%) |
| Chroma | moderately saturated (0.073) |
| Temperature | cool |
| Nearest name | Marine (#042E60) |
| Black text | 1.53:1 |
| White text | 13.66:1 |
Values
| HEX | #01304F |
| RGB | rgb(1, 48, 79) |
| HSL | hsl(204, 98%, 16%) |
| OKLCH | oklch(29.8% 0.073 244.4) |
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 #01304F | 13.66:1 | AAA | Lc -103.0 | Preferred for body text |
| Black text on #01304F | 1.53:1 | Fails | Lc 0.0 | Not readable |
| #01304F text on white | 13.66:1 | AAA | Lc 99.8 | Preferred for body text |
| #01304F text on black | 1.53:1 | 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 950.
-
Step 50
50
#EFF6FD
oklch(97% 0.012 248)
-
Step 100
100
#DCECFA
oklch(93.5% 0.026 244.4)
-
Step 200
200
#BFDDF7
oklch(88.4% 0.048 244.5)
-
Step 300
300
#90C7F5
oklch(80.8% 0.087 244.4)
-
Step 400
400
#48A8F0
oklch(70.6% 0.139 244.4)
-
Step 500
500
#0090E1
oklch(63.1% 0.158 244.7)
-
Step 600
600
#0079BE
oklch(55.6% 0.139 244.6)
-
Step 700
700
#0066A0
oklch(49.2% 0.121 244)
-
Step 800
800
#005384
oklch(42.6% 0.106 244.3)
-
Step 900
900
#00456F
oklch(37.6% 0.093 244.3)
-
Step 950
950 (this color)
#01304F
oklch(29.8% 0.073 244.4)
#01304F 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) | #213150 | 0.030 |
| Deuteranopia (no green cones) | #152B4E | 0.020 |
| Tritanopia (no blue cones) | #00383B | 0.052 |
| Achromatopsia (no color) | #2E2E2E | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #01304F
#01304F
oklch(29.8% 0.073 244.4)
- #442500
#442500
oklch(29.9% 0.067 64.7)
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 #01304F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine #042E60 ΔE 0.033
- Prussian Blue #1D3557 ΔE 0.034
- Midnight Green #073B4C ΔE 0.040
- Oxford Blue #1B263B ΔE 0.046
- Space Cadet #2B2D42 ΔE 0.048
- Gunmetal #293241 ΔE 0.048
- Dark Blue Grey #1F3B4D ΔE 0.049
- Marine Blue #01386A ΔE 0.051
Use #01304F 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.