#2F417F
Closest named color: Cobalt (#1E488F). oklch(39.5% 0.107 268.9), rgb(47, 65, 127).
Aa
White text reads best on this color (9.61:1).
About this color
#2F417F is a dark, moderately saturated blue. In OKLCH its lightness is 39%, its chroma 0.107 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.033 away. White text reads best on it, at 9.61:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.107) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.18:1 |
| White text | 9.61:1 |
Values
| HEX | #2F417F |
| RGB | rgb(47, 65, 127) |
| HSL | hsl(227, 46%, 34%) |
| OKLCH | oklch(39.5% 0.107 268.9) |
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 #2F417F | 9.61:1 | AAA | Lc -96.3 | Preferred for body text |
| Black text on #2F417F | 2.18:1 | Fails | Lc 11.9 | Not readable |
| #2F417F text on white | 9.61:1 | AAA | Lc 92.1 | Preferred for body text |
| #2F417F text on black | 2.18:1 | Fails | Lc -10.3 | 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
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E3EAFA
oklch(93.6% 0.023 266.9)
-
Step 200
200
#CDD9F8
oklch(88.6% 0.045 268.7)
-
Step 300
300
#ABBFF5
oklch(80.9% 0.08 268.8)
-
Step 400
400
#809CF1
oklch(70.7% 0.129 269.1)
-
Step 500
500
#6181EB
oklch(63.1% 0.163 268.8)
-
Step 600
600
#4A68DA
oklch(55.7% 0.177 268.9)
-
Step 700
700
#3B55BD
oklch(49% 0.166 268.9)
-
Step 800
800
#314699
oklch(42.6% 0.138 269.1)
-
Step 900
900 (this color)
#2F417F
oklch(39.5% 0.107 268.9)
-
Step 950
950
#192447
oklch(27.1% 0.067 268.5)
#2F417F 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) | #234981 | 0.024 |
| Deuteranopia (no green cones) | #15417E | 0.026 |
| Tritanopia (no blue cones) | #004F5A | 0.091 |
| Achromatopsia (no color) | #454545 | 0.107 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F417F
#2F417F
oklch(39.5% 0.107 268.9)
- #584300
#584300
oklch(39.4% 0.081 88.3)
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 #2F417F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.033
- Twilight Blue #0A437A ΔE 0.033
- Dark Slate Blue #483D8B ΔE 0.044
- Light Navy #155084 ΔE 0.045
- Blueberry #464196 ΔE 0.052
- Dusk Blue #26538D ΔE 0.053
- Deep Sea Blue #015482 ΔE 0.058
- Marine Blue #01386A ΔE 0.063
Use #2F417F 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.