#2F4297
Closest named color: Cobalt (#1E488F). oklch(41.5% 0.141 269.7), rgb(47, 66, 151).
Aa
White text reads best on this color (8.94:1).
About this color
#2F4297 is a dark, vivid blue. In OKLCH its lightness is 42%, its chroma 0.141 and its hue 270°. 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 8.94:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | vivid (0.141) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.34:1 |
| White text | 8.94:1 |
Values
| HEX | #2F4297 |
| RGB | rgb(47, 66, 151) |
| HSL | hsl(229, 53%, 39%) |
| OKLCH | oklch(41.5% 0.141 269.7) |
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 #2F4297 | 8.94:1 | AAA | Lc -94.6 | Preferred for body text |
| Black text on #2F4297 | 2.34:1 | Fails | Lc 13.8 | Not readable |
| #2F4297 text on white | 8.94:1 | AAA | Lc 90.1 | Preferred for body text |
| #2F4297 text on black | 2.34:1 | Fails | Lc -12.1 | 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
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E3EAFA
oklch(93.6% 0.023 266.9)
-
Step 200
200
#CDD8F8
oklch(88.4% 0.046 270.4)
-
Step 300
300
#ABBFF7
oklch(80.9% 0.083 269.3)
-
Step 400
400
#809BF3
oklch(70.6% 0.133 269.8)
-
Step 500
500
#6280EE
oklch(63.1% 0.168 269.6)
-
Step 600
600
#4B66DD
oklch(55.6% 0.184 269.8)
-
Step 700
700
#3D54BF
oklch(49.1% 0.169 269.9)
-
Step 800
800 (this color)
#2F4297
oklch(41.5% 0.141 269.7)
-
Step 900
900
#2B3B7B
oklch(37.6% 0.11 269.8)
-
Step 950
950
#192348
oklch(26.9% 0.07 269.8)
#2F4297 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) | #004E9A | 0.039 |
| Deuteranopia (no green cones) | #004595 | 0.033 |
| Tritanopia (no blue cones) | #005666 | 0.114 |
| Achromatopsia (no color) | #494949 | 0.141 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F4297
#2F4297
oklch(41.5% 0.141 269.7)
- #5E4900
#5E4900
oklch(41.6% 0.085 89.8)
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 #2F4297, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.026
- Blueberry #464196 ΔE 0.032
- Dark Slate Blue #483D8B ΔE 0.041
- Sapphire #2138AB ΔE 0.045
- Dusk Blue #26538D ΔE 0.051
- Light Navy #155084 ΔE 0.056
- Twilight Blue #0A437A ΔE 0.060
- Twilight #4E518B ΔE 0.068
Use #2F4297 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.