#2F4F82
Closest named color: Dusk Blue (#26538D). oklch(42.9% 0.093 259.3), rgb(47, 79, 130).
Aa
White text reads best on this color (8.19:1).
About this color
#2F4F82 is a dark, moderately saturated blue. In OKLCH its lightness is 43%, its chroma 0.093 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.020 away. White text reads best on it, at 8.19:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.093) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.56:1 |
| White text | 8.19:1 |
Values
| HEX | #2F4F82 |
| RGB | rgb(47, 79, 130) |
| HSL | hsl(217, 47%, 35%) |
| OKLCH | oklch(42.9% 0.093 259.3) |
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 #2F4F82 | 8.19:1 | AAA | Lc -92.8 | Preferred for body text |
| Black text on #2F4F82 | 2.56:1 | Fails | Lc 15.8 | Dividers and decoration only |
| #2F4F82 text on white | 8.19:1 | AAA | Lc 88.2 | Fine for body text |
| #2F4F82 text on black | 2.56:1 | Fails | Lc -14.0 | 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 800.
-
Step 50
50
#F3F6FA
oklch(97.2% 0.006 255.5)
-
Step 100
100
#E4EAF5
oklch(93.6% 0.016 262.8)
-
Step 200
200
#CEDAEE
oklch(88.5% 0.03 260.7)
-
Step 300
300
#ACC2E4
oklch(80.9% 0.054 259)
-
Step 400
400
#80A2D7
oklch(70.7% 0.087 259.1)
-
Step 500
500
#608ACC
oklch(63.1% 0.11 259.1)
-
Step 600
600
#4673B9
oklch(55.7% 0.12 258.9)
-
Step 700
700
#3860A0
oklch(49.2% 0.113 259.4)
-
Step 800
800 (this color)
#2F4F82
oklch(42.9% 0.093 259.3)
-
Step 900
900
#294268
oklch(37.8% 0.072 258.5)
-
Step 950
950
#19273D
oklch(27.2% 0.046 259.2)
#2F4F82 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) | #395384 | 0.018 |
| Deuteranopia (no green cones) | #2E4B81 | 0.012 |
| Tritanopia (no blue cones) | #005B62 | 0.079 |
| Achromatopsia (no color) | #4F4F4F | 0.093 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F4F82
#2F4F82
oklch(42.9% 0.093 259.3)
- #694900
#694900
oklch(43% 0.089 79.8)
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 #2F4F82, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.020
- Light Navy #155084 ΔE 0.021
- Deep Sea Blue #015482 ΔE 0.030
- Light Navy Blue #2E5A88 ΔE 0.032
- Cobalt #1E488F ΔE 0.037
- Denim Blue #3B5B92 ΔE 0.045
- Twilight #4E518B ΔE 0.045
- Dusk #4E5481 ΔE 0.045
Use #2F4F82 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.