#004B7B
Closest named color: Light Navy (#155084). oklch(40% 0.103 245.9), rgb(0, 75, 123).
Aa
White text reads best on this color (9.16:1).
About this color
#004B7B is a dark, moderately saturated blue. In OKLCH its lightness is 40%, its chroma 0.103 and its hue 246°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy (#155084), ΔE 0.024 away. White text reads best on it, at 9.16:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.103) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.29:1 |
| White text | 9.16:1 |
Values
| HEX | #004B7B |
| RGB | rgb(0, 75, 123) |
| HSL | hsl(203, 100%, 24%) |
| OKLCH | oklch(40% 0.103 245.9) |
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 #004B7B | 9.16:1 | AAA | Lc -94.9 | Preferred for body text |
| Black text on #004B7B | 2.29:1 | Fails | Lc 13.4 | Not readable |
| #004B7B text on white | 9.16:1 | AAA | Lc 90.5 | Preferred for body text |
| #004B7B text on black | 2.29:1 | Fails | Lc -11.8 | 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
#F0F6FC
oklch(97% 0.01 247.9)
-
Step 100
100
#DEECF8
oklch(93.6% 0.022 243.8)
-
Step 200
200
#C3DDF4
oklch(88.6% 0.042 245)
-
Step 300
300
#98C6F0
oklch(80.9% 0.077 246.5)
-
Step 400
400
#59A7E8
oklch(70.6% 0.123 245.9)
-
Step 500
500
#118FE2
oklch(63% 0.158 246.1)
-
Step 600
600
#0078C1
oklch(55.5% 0.143 246.2)
-
Step 700
700
#0065A3
oklch(49.1% 0.126 245.9)
-
Step 800
800
#005387
oklch(42.8% 0.11 245.8)
-
Step 900
900 (this color)
#004B7B
oklch(40% 0.103 245.9)
-
Step 950
950
#032844
oklch(26.9% 0.066 246.5)
#004B7B 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) | #334D7D | 0.039 |
| Deuteranopia (no green cones) | #21437A | 0.027 |
| Tritanopia (no blue cones) | #00575D | 0.072 |
| Achromatopsia (no color) | #484848 | 0.103 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #004B7B
#004B7B
oklch(40% 0.103 245.9)
- #673C00
#673C00
oklch(39.9% 0.089 66.1)
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 #004B7B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy #155084 ΔE 0.024
- Twilight Blue #0A437A ΔE 0.024
- Deep Sea Blue #015482 ΔE 0.028
- Cobalt #1E488F ΔE 0.040
- Dusk Blue #26538D ΔE 0.045
- Dark Grey Blue #29465B ΔE 0.056
- Light Navy Blue #2E5A88 ΔE 0.060
- Marine Blue #01386A ΔE 0.062
Use #004B7B 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.