#2F4983
Closest named color: Cobalt (#1E488F). oklch(41.6% 0.102 264.3), rgb(47, 73, 131).
Aa
White text reads best on this color (8.74:1).
About this color
#2F4983 is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.102 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.026 away. White text reads best on it, at 8.74:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.102) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.40:1 |
| White text | 8.74:1 |
Values
| HEX | #2F4983 |
| RGB | rgb(47, 73, 131) |
| HSL | hsl(221, 47%, 35%) |
| OKLCH | oklch(41.6% 0.102 264.3) |
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 #2F4983 | 8.74:1 | AAA | Lc -94.2 | Preferred for body text |
| Black text on #2F4983 | 2.40:1 | Fails | Lc 14.2 | Not readable |
| #2F4983 text on white | 8.74:1 | AAA | Lc 89.7 | Fine for body text |
| #2F4983 text on black | 2.40:1 | Fails | Lc -12.5 | 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E4EAF6
oklch(93.6% 0.017 264.5)
-
Step 200
200
#CED9F0
oklch(88.4% 0.034 265.2)
-
Step 300
300
#ADC1E8
oklch(80.9% 0.06 263.7)
-
Step 400
400
#83A0DD
oklch(70.8% 0.096 264.5)
-
Step 500
500
#6487D3
oklch(63.1% 0.122 264.4)
-
Step 600
600
#4B70C0
oklch(55.7% 0.131 263.9)
-
Step 700
700
#3C5DA6
oklch(49.1% 0.123 264.1)
-
Step 800
800 (this color)
#2F4983
oklch(41.6% 0.102 264.3)
-
Step 900
900
#2C406C
oklch(37.7% 0.08 264.4)
-
Step 950
950
#1A263F
oklch(27.1% 0.05 263.9)
#2F4983 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) | #2F4F85 | 0.017 |
| Deuteranopia (no green cones) | #224782 | 0.016 |
| Tritanopia (no blue cones) | #00565F | 0.087 |
| Achromatopsia (no color) | #4B4B4B | 0.102 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F4983
#2F4983
oklch(41.6% 0.102 264.3)
- #614700
#614700
oklch(41.5% 0.085 84.6)
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 #2F4983, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.026
- Light Navy #155084 ΔE 0.027
- Dusk Blue #26538D ΔE 0.030
- Deep Sea Blue #015482 ΔE 0.040
- Twilight Blue #0A437A ΔE 0.041
- Dark Slate Blue #483D8B ΔE 0.048
- Light Navy Blue #2E5A88 ΔE 0.050
- Blueberry #464196 ΔE 0.050
Use #2F4983 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.