#2F4575
Closest named color: Twilight Blue (#0A437A). oklch(39.7% 0.086 264.3), rgb(47, 69, 117).
Aa
White text reads best on this color (9.42:1).
About this color
#2F4575 is a dark, moderately saturated blue. In OKLCH its lightness is 40%, its chroma 0.086 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.034 away. White text reads best on it, at 9.42:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.086) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.22:1 |
| White text | 9.42:1 |
Values
| HEX | #2F4575 |
| RGB | rgb(47, 69, 117) |
| HSL | hsl(221, 43%, 32%) |
| OKLCH | oklch(39.7% 0.086 264.3) |
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 #2F4575 | 9.42:1 | AAA | Lc -95.9 | Preferred for body text |
| Black text on #2F4575 | 2.22:1 | Fails | Lc 12.3 | Not readable |
| #2F4575 text on white | 9.42:1 | AAA | Lc 91.6 | Preferred for body text |
| #2F4575 text on black | 2.22:1 | Fails | Lc -10.7 | 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
#F2F5FB
oklch(97% 0.009 264.5)
-
Step 100
100
#E4EAF7
oklch(93.6% 0.019 266)
-
Step 200
200
#CDD9F2
oklch(88.4% 0.037 265.1)
-
Step 300
300
#ACC1EB
oklch(80.9% 0.064 264.1)
-
Step 400
400
#80A0E1
oklch(70.8% 0.102 263.9)
-
Step 500
500
#6086D9
oklch(63% 0.133 264.3)
-
Step 600
600
#486FC6
oklch(55.7% 0.142 264.2)
-
Step 700
700
#395CAC
oklch(49.1% 0.134 264.3)
-
Step 800
800
#2F4C8B
oklch(42.8% 0.11 263.8)
-
Step 900
900 (this color)
#2F4575
oklch(39.7% 0.086 264.3)
-
Step 950
950
#192541
oklch(26.9% 0.055 265.3)
#2F4575 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) | #314A77 | 0.015 |
| Deuteranopia (no green cones) | #284374 | 0.011 |
| Tritanopia (no blue cones) | #005057 | 0.078 |
| Achromatopsia (no color) | #464646 | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F4575
#2F4575
oklch(39.7% 0.086 264.3)
- #5B4200
#5B4200
oklch(39.6% 0.081 84.1)
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 #2F4575, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.034
- Light Navy #155084 ΔE 0.040
- Cobalt #1E488F ΔE 0.045
- Dark Grey Blue #29465B ΔE 0.047
- Deep Sea Blue #015482 ΔE 0.050
- Dusk Blue #26538D ΔE 0.051
- Dark Slate Blue #483D8B ΔE 0.058
- Charcoal #264653 ΔE 0.062
Use #2F4575 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.