#2F4174
Closest named color: Twilight Blue (#0A437A). oklch(38.7% 0.09 267.5), rgb(47, 65, 116).
Aa
White text reads best on this color (9.86:1).
About this color
#2F4174 is a dark, moderately saturated blue. In OKLCH its lightness is 39%, its chroma 0.090 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.032 away. White text reads best on it, at 9.86:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.090) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.12:1 |
| White text | 9.86:1 |
Values
| HEX | #2F4174 |
| RGB | rgb(47, 65, 116) |
| HSL | hsl(224, 42%, 32%) |
| OKLCH | oklch(38.7% 0.09 267.5) |
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 #2F4174 | 9.86:1 | AAA | Lc -96.9 | Preferred for body text |
| Black text on #2F4174 | 2.12:1 | Fails | Lc 11.2 | Not readable |
| #2F4174 text on white | 9.86:1 | AAA | Lc 92.7 | Preferred for body text |
| #2F4174 text on black | 2.12:1 | Fails | Lc -9.7 | 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
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E4EAF7
oklch(93.6% 0.019 266)
-
Step 200
200
#CED9F3
oklch(88.5% 0.038 267.3)
-
Step 300
300
#ADC0ED
oklch(80.9% 0.067 267)
-
Step 400
400
#839EE4
oklch(70.7% 0.107 267.5)
-
Step 500
500
#6584DC
oklch(63% 0.137 267.7)
-
Step 600
600
#4D6CCA
oklch(55.6% 0.15 267.6)
-
Step 700
700
#3E5AAF
oklch(49.2% 0.139 267.4)
-
Step 800
800
#334A8E
oklch(42.8% 0.116 267.3)
-
Step 900
900 (this color)
#2F4174
oklch(38.7% 0.09 267.5)
-
Step 950
950
#1A2542
oklch(27% 0.056 266.9)
#2F4174 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) | #2B4776 | 0.018 |
| Deuteranopia (no green cones) | #224073 | 0.016 |
| Tritanopia (no blue cones) | #014C55 | 0.080 |
| Achromatopsia (no color) | #434343 | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F4174
#2F4174
oklch(38.7% 0.09 267.5)
- #564100
#564100
oklch(38.7% 0.079 87.8)
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 #2F4174, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.032
- Cobalt #1E488F ΔE 0.048
- Light Navy #155084 ΔE 0.049
- Dark Grey Blue #29465B ΔE 0.050
- Marine Blue #01386A ΔE 0.055
- Dark Slate Blue #483D8B ΔE 0.056
- Deep Sea Blue #015482 ΔE 0.059
- Dusk Blue #26538D ΔE 0.061
Use #2F4174 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.