#00304A
Closest named color: Midnight Green (#073B4C). oklch(29.4% 0.067 239.5), rgb(0, 48, 74).
Aa
White text reads best on this color (13.80:1).
About this color
#00304A is a dark, muted blue. In OKLCH its lightness is 29%, its chroma 0.067 and its hue 240°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Green (#073B4C), ΔE 0.039 away. White text reads best on it, at 13.80:1.
| Hue family | Blues |
| Lightness | dark (29%) |
| Chroma | muted (0.067) |
| Temperature | cool |
| Nearest name | Midnight Green (#073B4C) |
| Black text | 1.52:1 |
| White text | 13.80:1 |
Values
| HEX | #00304A |
| RGB | rgb(0, 48, 74) |
| HSL | hsl(201, 100%, 15%) |
| OKLCH | oklch(29.4% 0.067 239.5) |
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 #00304A | 13.80:1 | AAA | Lc -103.1 | Preferred for body text |
| Black text on #00304A | 1.52:1 | Fails | Lc 0.0 | Not readable |
| #00304A text on white | 13.80:1 | AAA | Lc 100.0 | Preferred for body text |
| #00304A text on black | 1.52:1 | 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
#EFF7FC
oklch(97.2% 0.011 234.8)
-
Step 100
100
#DDECF8
oklch(93.5% 0.023 241.9)
-
Step 200
200
#C0DEF4
oklch(88.6% 0.044 239.8)
-
Step 300
300
#91C8EF
oklch(80.9% 0.08 239.9)
-
Step 400
400
#49AAE7
oklch(70.6% 0.127 239.8)
-
Step 500
500
#0093D6
oklch(63.1% 0.143 239.3)
-
Step 600
600
#007BB5
oklch(55.6% 0.127 239.8)
-
Step 700
700
#006799
oklch(49% 0.112 240)
-
Step 800
800
#00557E
oklch(42.8% 0.097 239.2)
-
Step 900
900
#00466A
oklch(37.6% 0.086 240.1)
-
Step 950
950 (this color)
#00304A
oklch(29.4% 0.067 239.5)
#00304A 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) | #23304B | 0.034 |
| Deuteranopia (no green cones) | #192A4A | 0.026 |
| Tritanopia (no blue cones) | #003739 | 0.045 |
| Achromatopsia (no color) | #2D2D2D | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #00304A
#00304A
oklch(29.4% 0.067 239.5)
- #442302
#442302
oklch(29.5% 0.067 60.1)
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 #00304A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Green #073B4C ΔE 0.039
- Prussian Blue #1D3557 ΔE 0.039
- Oxford Blue #1B263B ΔE 0.041
- Marine #042E60 ΔE 0.042
- Gunmetal #293241 ΔE 0.046
- Space Cadet #2B2D42 ΔE 0.046
- Dark Blue Grey #1F3B4D ΔE 0.049
- Dark #1B2431 ΔE 0.055
Use #00304A 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.