#2F5191
Closest named color: Dusk Blue (#26538D). oklch(44.3% 0.113 261.8), rgb(47, 81, 145).
Aa
White text reads best on this color (7.75:1).
About this color
#2F5191 is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.113 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.012 away. White text reads best on it, at 7.75:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.113) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.70:1 |
| White text | 7.75:1 |
Values
| HEX | #2F5191 |
| RGB | rgb(47, 81, 145) |
| HSL | hsl(219, 51%, 38%) |
| OKLCH | oklch(44.3% 0.113 261.8) |
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 #2F5191 | 7.75:1 | AAA | Lc -91.5 | Preferred for body text |
| Black text on #2F5191 | 2.70:1 | Fails | Lc 17.3 | Dividers and decoration only |
| #2F5191 text on white | 7.75:1 | AAA | Lc 86.7 | Fine for body text |
| #2F5191 text on black | 2.70:1 | Fails | Lc -15.4 | Dividers and decoration only |
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
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E3EAF7
oklch(93.6% 0.019 263)
-
Step 200
200
#CCDAF2
oklch(88.5% 0.036 261.3)
-
Step 300
300
#AAC1EC
oklch(80.8% 0.066 262.8)
-
Step 400
400
#7CA1E2
oklch(70.8% 0.104 261.3)
-
Step 500
500
#5B88DA
oklch(63.2% 0.134 261.6)
-
Step 600
600
#4170C8
oklch(55.7% 0.146 261.7)
-
Step 700
700
#335DAD
oklch(49.1% 0.136 261.9)
-
Step 800
800 (this color)
#2F5191
oklch(44.3% 0.113 261.8)
-
Step 900
900
#274070
oklch(37.7% 0.088 262.2)
-
Step 950
950
#172641
oklch(27% 0.055 261.4)
#2F5191 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) | #335793 | 0.018 |
| Deuteranopia (no green cones) | #234E90 | 0.016 |
| Tritanopia (no blue cones) | #00606A | 0.093 |
| Achromatopsia (no color) | #525252 | 0.113 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F5191
#2F5191
oklch(44.3% 0.113 261.8)
- #6C4D00
#6C4D00
oklch(44.2% 0.091 81.9)
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 #2F5191, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.012
- Light Navy #155084 ΔE 0.032
- Cobalt #1E488F ΔE 0.033
- Light Navy Blue #2E5A88 ΔE 0.033
- Denim Blue #3B5B92 ΔE 0.034
- Deep Sea Blue #015482 ΔE 0.040
- Twilight #4E518B ΔE 0.041
- Dusk #4E5481 ΔE 0.049
Use #2F5191 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.