#004F75
Closest named color: Deep Sea Blue (#015482). oklch(40.7% 0.091 238.8), rgb(0, 79, 117).
Aa
White text reads best on this color (8.84:1).
About this color
#004F75 is a dark, moderately saturated blue. In OKLCH its lightness is 41%, its chroma 0.091 and its hue 239°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.025 away. White text reads best on it, at 8.84:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.091) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.37:1 |
| White text | 8.84:1 |
Values
| HEX | #004F75 |
| RGB | rgb(0, 79, 117) |
| HSL | hsl(199, 100%, 23%) |
| OKLCH | oklch(40.7% 0.091 238.8) |
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 #004F75 | 8.84:1 | AAA | Lc -94.2 | Preferred for body text |
| Black text on #004F75 | 2.37:1 | Fails | Lc 14.3 | Not readable |
| #004F75 text on white | 8.84:1 | AAA | Lc 89.7 | Fine for body text |
| #004F75 text on black | 2.37:1 | Fails | Lc -12.6 | 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 800.
-
Step 50
50
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E1ECF3
oklch(93.7% 0.015 235.4)
-
Step 200
200
#C8DCEB
oklch(88.4% 0.03 240.2)
-
Step 300
300
#A2C6E0
oklch(80.9% 0.053 239.7)
-
Step 400
400
#6CA8D0
oklch(70.6% 0.086 238.8)
-
Step 500
500
#4092C4
oklch(63.1% 0.109 238.7)
-
Step 600
600
#157BB1
oklch(55.5% 0.119 239.3)
-
Step 700
700
#006898
oklch(49.2% 0.11 238.7)
-
Step 800
800 (this color)
#004F75
oklch(40.7% 0.091 238.8)
-
Step 900
900
#154663
oklch(37.6% 0.071 239.1)
-
Step 950
950
#0E293A
oklch(26.9% 0.046 239.3)
#004F75 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) | #3C4F77 | 0.047 |
| Deuteranopia (no green cones) | #2D4674 | 0.037 |
| Tritanopia (no blue cones) | #00595C | 0.061 |
| Achromatopsia (no color) | #4A4A4A | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #004F75
#004F75
oklch(40.7% 0.091 238.8)
- #6D3B08
#6D3B08
oklch(40.7% 0.092 58.8)
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 #004F75, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.025
- Light Navy #155084 ΔE 0.028
- Twilight Blue #0A437A ΔE 0.039
- Dusk Blue #26538D ΔE 0.048
- Dark Grey Blue #29465B ΔE 0.049
- Cobalt #1E488F ΔE 0.054
- Deep Teal #00555A ΔE 0.055
- Light Navy Blue #2E5A88 ΔE 0.055
Use #004F75 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.