#2F4282
Closest named color: Cobalt (#1E488F). oklch(39.9% 0.11 268.6), rgb(47, 66, 130).
Aa
White text reads best on this color (9.44:1).
About this color
#2F4282 is a dark, moderately saturated blue. In OKLCH its lightness is 40%, its chroma 0.110 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.028 away. White text reads best on it, at 9.44:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.110) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.22:1 |
| White text | 9.44:1 |
Values
| HEX | #2F4282 |
| RGB | rgb(47, 66, 130) |
| HSL | hsl(226, 47%, 35%) |
| OKLCH | oklch(39.9% 0.11 268.6) |
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 #2F4282 | 9.44:1 | AAA | Lc -95.9 | Preferred for body text |
| Black text on #2F4282 | 2.22:1 | Fails | Lc 12.3 | Not readable |
| #2F4282 text on white | 9.44:1 | AAA | Lc 91.6 | Preferred for body text |
| #2F4282 text on black | 2.22:1 | Fails | Lc -10.8 | 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
#CCD9F8
oklch(88.5% 0.045 267.4)
-
Step 300
300
#AABFF7
oklch(80.9% 0.083 268.6)
-
Step 400
400
#7E9CF3
oklch(70.7% 0.132 268.5)
-
Step 500
500
#5F81EE
oklch(63.1% 0.168 268.3)
-
Step 600
600
#4867DD
oklch(55.6% 0.183 268.7)
-
Step 700
700
#3A55C0
oklch(49.2% 0.17 268.6)
-
Step 800
800
#30469B
oklch(42.7% 0.141 268.8)
-
Step 900
900 (this color)
#2F4282
oklch(39.9% 0.11 268.6)
-
Step 950
950
#182448
oklch(27.1% 0.069 267.8)
#2F4282 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) | #224A84 | 0.024 |
| Deuteranopia (no green cones) | #134281 | 0.027 |
| Tritanopia (no blue cones) | #00515B | 0.096 |
| Achromatopsia (no color) | #464646 | 0.110 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F4282
#2F4282
oklch(39.9% 0.11 268.6)
- #594400
#594400
oklch(39.8% 0.081 88.6)
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 #2F4282, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.028
- Twilight Blue #0A437A ΔE 0.035
- Dark Slate Blue #483D8B ΔE 0.041
- Light Navy #155084 ΔE 0.043
- Blueberry #464196 ΔE 0.048
- Dusk Blue #26538D ΔE 0.049
- Deep Sea Blue #015482 ΔE 0.056
- Twilight #4E518B ΔE 0.066
Use #2F4282 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.